@colordx/core - npm Package Compare versions

Comparing version 5.4.0 to 5.4.1

dist/chunk-4LKLL3IS.mjs

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dist/chunk-4LKLL3IS.mjs.map

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{ NUM_OR_NONE, clamp, hasKeys, isAnyNumber, isNumber, isObject, parseNum, round, sanitize } from '../helpers.js';\nimport { srgbFromLinear, srgbToLinear } from '../transfer.js';\nimport type { RgbColor, XyzColor, XyzD65Color } from '../types.js';\nimport { clampRgb } from './rgb.js';\n\n// D50 white point (CSS Color 4: xy = 0.3457/0.3585)\nexport const D50_WX = 96.42956752983539;\nexport const D50_WY = 100;\nexport const D50_WZ = 82.51046025104603;\n\n// ── CSS Color 4 exact rational matrices ─────────────────────────────────────\n// sRGB linear → XYZ D65 (xyz in 0–1; callers scale to 0–100 by multiplying).\nconst S_XR = 0.41239079926595951,\n  S_XG = 0.35758433938387796,\n  S_XB = 0.18048078840183429;\nconst S_YR = 0.21263900587151036,\n  S_YG = 0.71516867876775592,\n  S_YB = 0.072192315360733714;\nconst S_ZR = 0.019330818715591849,\n  S_ZG = 0.11919477979462599,\n  S_ZB = 0.95053215224966059;\n\n// XYZ D65 (0–100 scale) → sRGB linear (0–1). Equals the CSS inverse matrix ÷100.\nconst X_RX = 0.032409699419045213,\n  X_RY = -0.015373831775700935,\n  X_RZ = -0.0049861076029300327;\nconst X_GX = -0.0096924363628087984,\n  X_GY = 0.018759675015077206,\n  X_GZ = 0.00041555057407175612;\nconst X_BX = 0.00055630079696993608,\n  X_BY = -0.0020397695888897657,\n  X_BZ = 0.010569715142428786;\n\n// Bradford D65 → D50 (CSS Color 4)\nconst D65_TO_D50_XX = 1.0479297925449969,\n  D65_TO_D50_XY = 0.022946870601609652,\n  D65_TO_D50_XZ = -0.05019226628920524;\nconst D65_TO_D50_YX = 0.02962780877005599,\n  D65_TO_D50_YY = 0.9904344267538799,\n  D65_TO_D50_YZ = -0.017073799063418826;\nconst D65_TO_D50_ZX = -0.009243040646204504,\n  D65_TO_D50_ZY = 0.015055191490298152,\n  D65_TO_D50_ZZ = 0.7518742814281371;\n\n// Bradford D50 → D65 (CSS Color 4, inverse of above)\nconst D50_TO_D65_XX = 0.955473421488075,\n  D50_TO_D65_XY = -0.02309845494876471,\n  D50_TO_D65_XZ = 0.06325924320057072;\nconst D50_TO_D65_YX = -0.0283697093338637,\n  D50_TO_D65_YY = 1.0099953980813041,\n  D50_TO_D65_YZ = 0.021041441191917323;\nconst D50_TO_D65_ZX = 0.012314014864481998,\n  D50_TO_D65_ZY = -0.020507649298898964,\n  D50_TO_D65_ZZ = 1.330365926242124;\n\n// ── RGB ↔ XYZ D65 ───────────────────────────────────────────────────────────\n\n/** sRGB (0–255) → XYZ D65 (0–100, screen-native, no Bradford adaptation). */\nexport const rgbToXyzD65 = ({ r, g, b, alpha }: RgbColor): XyzD65Color => {\n  const lr = srgbToLinear(r / 255),\n    lg = srgbToLinear(g / 255),\n    lb = srgbToLinear(b / 255);\n  return {\n    x: 100 * (S_XR * lr + S_XG * lg + S_XB * lb),\n    y: 100 * (S_YR * lr + S_YG * lg + S_YB * lb),\n    z: 100 * (S_ZR * lr + S_ZG * lg + S_ZB * lb),\n    alpha: clamp(round(alpha, 3), 0, 1),\n    colorSpace: 'xyz-d65' as const,\n  };\n};\n\n/** XYZ D65 (0–100) → linear sRGB (0–1, unclamped). */\nexport const xyzD65ToLinearSrgb = (x: number, y: number, z: number): [number, number, number] => [\n  X_RX * x + X_RY * y + X_RZ * z,\n  X_GX * x + X_GY * y + X_GZ * z,\n  X_BX * x + X_BY * y + X_BZ * z,\n];\n\n/** Zero-allocation sibling of xyzD65ToLinearSrgb — writes [lr, lg, lb] into `out`. */\nexport const xyzD65ToLinearSrgbInto = (out: Float64Array | number[], x: number, y: number, z: number): void => {\n  out[0] = X_RX * x + X_RY * y + X_RZ * z;\n  out[1] = X_GX * x + X_GY * y + X_GZ * z;\n  out[2] = X_BX * x + X_BY * y + X_BZ * z;\n};\n\nexport const xyzD65ToRgb = ({ x, y, z, alpha }: XyzD65Color): RgbColor => {\n  const [lr, lg, lb] = xyzD65ToLinearSrgb(x, y, z);\n  return clampRgb({\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  });\n};\n\nconst xyzD65ToRgbUnclamped = ({ x, y, z, alpha }: XyzD65Color): RgbColor => {\n  const [lr, lg, lb] = xyzD65ToLinearSrgb(x, y, z);\n  return {\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  };\n};\n\n// ── RGB ↔ XYZ D50 ───────────────────────────────────────────────────────────\n\nexport const rgbToXyz = ({ r, g, b, alpha }: RgbColor): XyzColor => {\n  const lr = srgbToLinear(r / 255),\n    lg = srgbToLinear(g / 255),\n    lb = srgbToLinear(b / 255);\n  const xd65 = 100 * (S_XR * lr + S_XG * lg + S_XB * lb);\n  const yd65 = 100 * (S_YR * lr + S_YG * lg + S_YB * lb);\n  const zd65 = 100 * (S_ZR * lr + S_ZG * lg + S_ZB * lb);\n  return {\n    x: D65_TO_D50_XX * xd65 + D65_TO_D50_XY * yd65 + D65_TO_D50_XZ * zd65,\n    y: D65_TO_D50_YX * xd65 + D65_TO_D50_YY * yd65 + D65_TO_D50_YZ * zd65,\n    z: D65_TO_D50_ZX * xd65 + D65_TO_D50_ZY * yd65 + D65_TO_D50_ZZ * zd65,\n    alpha: clamp(round(alpha, 3), 0, 1),\n  };\n};\n\n/** Zero-allocation sibling of xyzD50ToLinearSrgb — writes [lr, lg, lb] into `out`. */\nexport const xyzD50ToLinearSrgbInto = (out: Float64Array | number[], x: number, y: number, z: number): void => {\n  const xd65 = D50_TO_D65_XX * x + D50_TO_D65_XY * y + D50_TO_D65_XZ * z;\n  const yd65 = D50_TO_D65_YX * x + D50_TO_D65_YY * y + D50_TO_D65_YZ * z;\n  const zd65 = D50_TO_D65_ZX * x + D50_TO_D65_ZY * y + D50_TO_D65_ZZ * z;\n  out[0] = X_RX * xd65 + X_RY * yd65 + X_RZ * zd65;\n  out[1] = X_GX * xd65 + X_GY * yd65 + X_GZ * zd65;\n  out[2] = X_BX * xd65 + X_BY * yd65 + X_BZ * zd65;\n};\n\n/** XYZ D50 → linear sRGB (no gamma, no clamping). x/y/z are in 0–100 scale. */\nexport const xyzD50ToLinearSrgb = (x: number, y: number, z: number): [number, number, number] => {\n  const xd65 = D50_TO_D65_XX * x + D50_TO_D65_XY * y + D50_TO_D65_XZ * z;\n  const yd65 = D50_TO_D65_YX * x + D50_TO_D65_YY * y + D50_TO_D65_YZ * z;\n  const zd65 = D50_TO_D65_ZX * x + D50_TO_D65_ZY * y + D50_TO_D65_ZZ * z;\n  return [\n    X_RX * xd65 + X_RY * yd65 + X_RZ * zd65,\n    X_GX * xd65 + X_GY * yd65 + X_GZ * zd65,\n    X_BX * xd65 + X_BY * yd65 + X_BZ * zd65,\n  ];\n};\n\nexport const xyzToRgb = ({ x, y, z, alpha }: XyzColor): RgbColor => {\n  const [lr, lg, lb] = xyzD50ToLinearSrgb(x, y, z);\n  return clampRgb({\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  });\n};\n\n/** Unclamped XYZ D50 → gamma-encoded sRGB. Channels may exceed [0, 255] for out-of-sRGB-gamut colors. */\nconst xyzToRgbUnclamped = ({ x, y, z, alpha }: XyzColor): RgbColor => {\n  const [lr, lg, lb] = xyzD50ToLinearSrgb(x, y, z);\n  return {\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  };\n};\n\n// ── Parsers ─────────────────────────────────────────────────────────────────\n\nexport const parseXyzObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  // Reject D65-discriminated objects — parseXyzD65Object owns those.\n  if ((input as { colorSpace?: unknown }).colorSpace === 'xyz-d65') return null;\n  if (!hasKeys(input, ['x', 'y', 'z'])) return null;\n  const { x, y, z, alpha = 1 } = input as { x: unknown; y: unknown; z: unknown; alpha?: unknown };\n  if (!isNumber(x) || !isNumber(y) || !isNumber(z) || !isNumber(alpha)) return null;\n  return xyzToRgbUnclamped({\n    x,\n    y,\n    z,\n    alpha: clamp(alpha, 0, 1),\n  });\n};\n\nexport const parseXyzD65Object = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'xyz-d65') return null;\n  if (!hasKeys(input, ['x', 'y', 'z'])) return null;\n  const { x, y, z, alpha = 1 } = input as { x: unknown; y: unknown; z: unknown; alpha?: unknown };\n  if (!isAnyNumber(x) || !isAnyNumber(y) || !isAnyNumber(z) || !isAnyNumber(alpha)) return null;\n  return xyzD65ToRgbUnclamped({\n    x: sanitize(x),\n    y: sanitize(y),\n    z: sanitize(z),\n    alpha: clamp(sanitize(alpha), 0, 1),\n    colorSpace: 'xyz-d65',\n  });\n};\n\n// CSS Color 4: color(xyz-d65 x y z / alpha). Channels accept number|percentage|none.\n// The library uses a 0–100 XYZ scale (to match the existing XyzColor convention); percent is\n// treated as the same scale for symmetry with the emitted string (100% = 100).\nconst XYZ_D65_RE = new RegExp(\n  `^color\\\\(\\\\s*xyz-d65\\\\s+(?<x>${NUM_OR_NONE})(?<xp>%?)\\\\s+(?<y>${NUM_OR_NONE})(?<yp>%?)` +\n    `\\\\s+(?<z>${NUM_OR_NONE})(?<zp>%?)\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nconst XYZ_D50_RE = new RegExp(\n  `^color\\\\(\\\\s*xyz-d50\\\\s+(?<x>${NUM_OR_NONE})(?<xp>%?)\\\\s+(?<y>${NUM_OR_NONE})(?<yp>%?)` +\n    `\\\\s+(?<z>${NUM_OR_NONE})(?<zp>%?)\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseXyzD65String = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = XYZ_D65_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const x = parseNum(g.x!);\n  const y = parseNum(g.y!);\n  const z = parseNum(g.z!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return xyzD65ToRgbUnclamped({\n    x,\n    y,\n    z,\n    alpha: clamp(alpha, 0, 1),\n    colorSpace: 'xyz-d65',\n  });\n};\n\nexport const parseXyzD50String = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = XYZ_D50_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const x = parseNum(g.x!);\n  const y = parseNum(g.y!);\n  const z = parseNum(g.z!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return xyzToRgbUnclamped({\n    x,\n    y,\n    z,\n    alpha: clamp(alpha, 0, 1),\n  });\n};\n","import { NUM_OR_NONE, clamp, hasKeys, isAnyNumber, isObject, parseNum, round, sanitize } from '../helpers.js';\nimport { srgbFromLinear, srgbToLinear } from '../transfer.js';\nimport type { LabColor, RgbColor, XyzColor } from '../types.js';\nimport { D50_WX as WX, D50_WY as WY, D50_WZ as WZ, rgbToXyz, xyzD50ToLinearSrgb, xyzToRgb } from './xyz.js';\n\n// D65 white point derived from CIE chromaticity (x=0.3127, y=0.329)\nconst D65_WX = (0.3127 / 0.329) * 100;\nconst D65_WY = 100;\nconst D65_WZ = ((1 - 0.3127 - 0.329) / 0.329) * 100;\n\nconst EPSILON = 216 / 24389;\nconst KAPPA = 24389 / 27;\n\nconst f = (t: number) => (t > EPSILON ? Math.cbrt(t) : (KAPPA * t + 16) / 116);\n\nexport const xyzToLab = ({ x, y, z, alpha }: XyzColor): LabColor => {\n  const fy = f(y / WY);\n  return {\n    l: 116 * fy - 16,\n    a: 500 * (f(x / WX) - fy) || 0, // || 0 suppresses −0; NaN is impossible since WX/WZ are non-zero constants\n    b: 200 * (fy - f(z / WZ)) || 0,\n    alpha: round(alpha, 3),\n    colorSpace: 'lab' as const,\n  };\n};\n\n/** Primitives-only Lab → XYZ D50. x/y/z in 0–100 scale. Shared with channels.ts hot paths. */\nexport const labToXyzValues = (l: number, a: number, b: number): [number, number, number] => {\n  const fy = (l + 16) / 116;\n  const fx = a / 500 + fy;\n  const fz = fy - b / 200;\n  return [\n    (fx ** 3 > EPSILON ? fx ** 3 : (116 * fx - 16) / KAPPA) * WX,\n    (l > 8 ? fy ** 3 : l / KAPPA) * WY,\n    (fz ** 3 > EPSILON ? fz ** 3 : (116 * fz - 16) / KAPPA) * WZ,\n  ];\n};\n\n/** Zero-allocation sibling of labToXyzValues — writes [x, y, z] into `out`. */\nexport const labToXyzValuesInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  const fy = (l + 16) / 116;\n  const fx = a / 500 + fy;\n  const fz = fy - b / 200;\n  out[0] = (fx ** 3 > EPSILON ? fx ** 3 : (116 * fx - 16) / KAPPA) * WX;\n  out[1] = (l > 8 ? fy ** 3 : l / KAPPA) * WY;\n  out[2] = (fz ** 3 > EPSILON ? fz ** 3 : (116 * fz - 16) / KAPPA) * WZ;\n};\n\nexport const labToXyz = ({ l, a, b, alpha }: LabColor): XyzColor => {\n  const [x, y, z] = labToXyzValues(l, a, b);\n  return { x, y, z, alpha };\n};\n\nexport const rgbToLab = (rgb: RgbColor): LabColor => xyzToLab(rgbToXyz(rgb));\n\n/** RGB → CIE Lab using D65 white point (screen-native; used for perceptual difference). */\nexport const rgbToLabD65 = ({ r, g, b, alpha }: RgbColor): LabColor => {\n  const lr = srgbToLinear(r / 255),\n    lg = srgbToLinear(g / 255),\n    lb = srgbToLinear(b / 255);\n  const x = 100 * (0.41239079926595951 * lr + 0.35758433938387796 * lg + 0.18048078840183429 * lb);\n  const y = 100 * (0.21263900587151036 * lr + 0.71516867876775592 * lg + 0.072192315360733714 * lb);\n  const z = 100 * (0.019330818715591849 * lr + 0.11919477979462599 * lg + 0.95053215224966059 * lb);\n  const fy = f(y / D65_WY);\n  return {\n    l: 116 * fy - 16,\n    a: 500 * (f(x / D65_WX) - fy) || 0,\n    b: 200 * (fy - f(z / D65_WZ)) || 0,\n    alpha: round(alpha, 3),\n    colorSpace: 'lab' as const,\n  };\n};\n\nexport const deltaE2000 = (lab1: LabColor, lab2: LabColor): number => {\n  const { l: L1, a: a1, b: b1 } = lab1;\n  const { l: L2, a: a2, b: b2 } = lab2;\n  const rad = Math.PI / 180;\n  const deg = 180 / Math.PI;\n\n  const C1 = Math.sqrt(a1 ** 2 + b1 ** 2);\n  const C2 = Math.sqrt(a2 ** 2 + b2 ** 2);\n  const Cab = ((C1 + C2) / 2) ** 7;\n  const G = 0.5 * (1 - Math.sqrt(Cab / (Cab + 25 ** 7)));\n  const a1p = a1 * (1 + G);\n  const a2p = a2 * (1 + G);\n  const C1p = Math.sqrt(a1p ** 2 + b1 ** 2);\n  const C2p = Math.sqrt(a2p ** 2 + b2 ** 2);\n  const Cp = (C1p + C2p) / 2;\n\n  const h1p = a1p === 0 && b1 === 0 ? 0 : Math.atan2(b1, a1p) * deg;\n  const h2p = a2p === 0 && b2 === 0 ? 0 : Math.atan2(b2, a2p) * deg;\n  const h1 = h1p < 0 ? h1p + 360 : h1p;\n  const h2 = h2p < 0 ? h2p + 360 : h2p;\n\n  let dhp = h2 - h1;\n  const absDh = Math.abs(h2 - h1);\n  if (absDh > 180 && h2 <= h1) dhp += 360;\n  else if (absDh > 180 && h2 > h1) dhp -= 360;\n\n  const Lm = (L1 + L2) / 2;\n  let Hm = h1 + h2;\n  if (absDh <= 180) Hm /= 2;\n  else Hm = (h1 + h2 < 360 ? Hm + 360 : Hm - 360) / 2;\n\n  const T =\n    1 -\n    0.17 * Math.cos(rad * (Hm - 30)) +\n    0.24 * Math.cos(2 * rad * Hm) +\n    0.32 * Math.cos(rad * (3 * Hm + 6)) -\n    0.2 * Math.cos(rad * (4 * Hm - 63));\n\n  const dLp = L2 - L1;\n  const dCp = C2p - C1p;\n  const dHp = 2 * Math.sin((rad * dhp) / 2) * Math.sqrt(C1p * C2p);\n\n  const SL = 1 + (0.015 * (Lm - 50) ** 2) / Math.sqrt(20 + (Lm - 50) ** 2);\n  const SC = 1 + 0.045 * Cp;\n  const SH = 1 + 0.015 * Cp * T;\n\n  const RC7 = Cp ** 7;\n  const RC = 2 * Math.sqrt(RC7 / (RC7 + 25 ** 7));\n  const dTheta = 30 * Math.exp(-(((Hm - 275) / 25) ** 2));\n  const RT = -RC * Math.sin(2 * rad * dTheta);\n\n  return Math.sqrt((dLp / SL) ** 2 + (dCp / SC) ** 2 + (dHp / SH) ** 2 + RT * (dCp / SC) * (dHp / SH));\n};\n\nexport const labToRgb = (lab: LabColor): RgbColor => xyzToRgb(labToXyz(lab));\n\n/**\n * Unclamped Lab (D50) → gamma-encoded sRGB (0–255). Channels may exceed [0, 255] or go\n * negative for colors outside the sRGB gamut. Preserves out-of-gamut information so callers\n * (mapSrgb, inGamut*) can detect and map the color; sRGB output methods clamp at the edge.\n */\nexport const labToRgbUnclamped = ({ l, a, b, alpha }: LabColor): RgbColor => {\n  const [x, y, z] = labToXyzValues(l, a, b);\n  const [lr, lg, lb] = xyzD50ToLinearSrgb(x, y, z);\n  return {\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  };\n};\n\n// CSS Color 4: lab(L a b / alpha). L: number|percentage|none (100% = 100).\n// a/b: number|percentage|none (100% = 125).\nconst LAB_RE = new RegExp(\n  `^lab\\\\(\\\\s*(?<l>${NUM_OR_NONE})(?<lp>%?)\\\\s+(?<a>${NUM_OR_NONE})(?<ap>%?)\\\\s+(?<b>${NUM_OR_NONE})(?<bp>%?)` +\n    `\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseLabString = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = LAB_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const l = parseNum(g.l!); // 100% = 100, so value is unchanged whether `%` present\n  const a = g.ap ? parseNum(g.a!) * 1.25 : parseNum(g.a!);\n  const b = g.bp ? parseNum(g.b!) * 1.25 : parseNum(g.b!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return labToRgbUnclamped({\n    l: clamp(l, 0, 100),\n    a,\n    b,\n    alpha: clamp(alpha, 0, 1),\n    colorSpace: 'lab',\n  });\n};\n\nexport const parseLabObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'lab') return null;\n  if (!hasKeys(input, ['l', 'a', 'b'])) return null;\n  const { l, a, b, alpha = 1 } = input as { l: unknown; a: unknown; b: unknown; alpha?: unknown };\n  if (!isAnyNumber(l) || !isAnyNumber(a) || !isAnyNumber(b) || !isAnyNumber(alpha)) return null;\n  return labToRgbUnclamped({\n    l: clamp(sanitize(l), 0, 100),\n    a: sanitize(a),\n    b: sanitize(b),\n    alpha: clamp(sanitize(alpha), 0, 1),\n    colorSpace: 'lab',\n  });\n};\n"]}

dist/chunk-B3CQY27M.cjs

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{ NUM_OR_NONE, clamp, hasKeys, isAnyNumber, isNumber, isObject, parseNum, round, sanitize } from '../helpers.js';\nimport { srgbFromLinear, srgbToLinear } from '../transfer.js';\nimport type { RgbColor, XyzColor, XyzD65Color } from '../types.js';\nimport { clampRgb } from './rgb.js';\n\n// D50 white point (CSS Color 4: xy = 0.3457/0.3585)\nexport const D50_WX = 96.42956752983539;\nexport const D50_WY = 100;\nexport const D50_WZ = 82.51046025104603;\n\n// ── CSS Color 4 exact rational matrices ─────────────────────────────────────\n// sRGB linear → XYZ D65 (xyz in 0–1; callers scale to 0–100 by multiplying).\nconst S_XR = 0.41239079926595951,\n  S_XG = 0.35758433938387796,\n  S_XB = 0.18048078840183429;\nconst S_YR = 0.21263900587151036,\n  S_YG = 0.71516867876775592,\n  S_YB = 0.072192315360733714;\nconst S_ZR = 0.019330818715591849,\n  S_ZG = 0.11919477979462599,\n  S_ZB = 0.95053215224966059;\n\n// XYZ D65 (0–100 scale) → sRGB linear (0–1). Equals the CSS inverse matrix ÷100.\nconst X_RX = 0.032409699419045213,\n  X_RY = -0.015373831775700935,\n  X_RZ = -0.0049861076029300327;\nconst X_GX = -0.0096924363628087984,\n  X_GY = 0.018759675015077206,\n  X_GZ = 0.00041555057407175612;\nconst X_BX = 0.00055630079696993608,\n  X_BY = -0.0020397695888897657,\n  X_BZ = 0.010569715142428786;\n\n// Bradford D65 → D50 (CSS Color 4)\nconst D65_TO_D50_XX = 1.0479297925449969,\n  D65_TO_D50_XY = 0.022946870601609652,\n  D65_TO_D50_XZ = -0.05019226628920524;\nconst D65_TO_D50_YX = 0.02962780877005599,\n  D65_TO_D50_YY = 0.9904344267538799,\n  D65_TO_D50_YZ = -0.017073799063418826;\nconst D65_TO_D50_ZX = -0.009243040646204504,\n  D65_TO_D50_ZY = 0.015055191490298152,\n  D65_TO_D50_ZZ = 0.7518742814281371;\n\n// Bradford D50 → D65 (CSS Color 4, inverse of above)\nconst D50_TO_D65_XX = 0.955473421488075,\n  D50_TO_D65_XY = -0.02309845494876471,\n  D50_TO_D65_XZ = 0.06325924320057072;\nconst D50_TO_D65_YX = -0.0283697093338637,\n  D50_TO_D65_YY = 1.0099953980813041,\n  D50_TO_D65_YZ = 0.021041441191917323;\nconst D50_TO_D65_ZX = 0.012314014864481998,\n  D50_TO_D65_ZY = -0.020507649298898964,\n  D50_TO_D65_ZZ = 1.330365926242124;\n\n// ── RGB ↔ XYZ D65 ───────────────────────────────────────────────────────────\n\n/** sRGB (0–255) → XYZ D65 (0–100, screen-native, no Bradford adaptation). */\nexport const rgbToXyzD65 = ({ r, g, b, alpha }: RgbColor): XyzD65Color => {\n  const lr = srgbToLinear(r / 255),\n    lg = srgbToLinear(g / 255),\n    lb = srgbToLinear(b / 255);\n  return {\n    x: 100 * (S_XR * lr + S_XG * lg + S_XB * lb),\n    y: 100 * (S_YR * lr + S_YG * lg + S_YB * lb),\n    z: 100 * (S_ZR * lr + S_ZG * lg + S_ZB * lb),\n    alpha: clamp(round(alpha, 3), 0, 1),\n    colorSpace: 'xyz-d65' as const,\n  };\n};\n\n/** XYZ D65 (0–100) → linear sRGB (0–1, unclamped). */\nexport const xyzD65ToLinearSrgb = (x: number, y: number, z: number): [number, number, number] => [\n  X_RX * x + X_RY * y + X_RZ * z,\n  X_GX * x + X_GY * y + X_GZ * z,\n  X_BX * x + X_BY * y + X_BZ * z,\n];\n\n/** Zero-allocation sibling of xyzD65ToLinearSrgb — writes [lr, lg, lb] into `out`. */\nexport const xyzD65ToLinearSrgbInto = (out: Float64Array | number[], x: number, y: number, z: number): void => {\n  out[0] = X_RX * x + X_RY * y + X_RZ * z;\n  out[1] = X_GX * x + X_GY * y + X_GZ * z;\n  out[2] = X_BX * x + X_BY * y + X_BZ * z;\n};\n\nexport const xyzD65ToRgb = ({ x, y, z, alpha }: XyzD65Color): RgbColor => {\n  const [lr, lg, lb] = xyzD65ToLinearSrgb(x, y, z);\n  return clampRgb({\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  });\n};\n\nconst xyzD65ToRgbUnclamped = ({ x, y, z, alpha }: XyzD65Color): RgbColor => {\n  const [lr, lg, lb] = xyzD65ToLinearSrgb(x, y, z);\n  return {\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  };\n};\n\n// ── RGB ↔ XYZ D50 ───────────────────────────────────────────────────────────\n\nexport const rgbToXyz = ({ r, g, b, alpha }: RgbColor): XyzColor => {\n  const lr = srgbToLinear(r / 255),\n    lg = srgbToLinear(g / 255),\n    lb = srgbToLinear(b / 255);\n  const xd65 = 100 * (S_XR * lr + S_XG * lg + S_XB * lb);\n  const yd65 = 100 * (S_YR * lr + S_YG * lg + S_YB * lb);\n  const zd65 = 100 * (S_ZR * lr + S_ZG * lg + S_ZB * lb);\n  return {\n    x: D65_TO_D50_XX * xd65 + D65_TO_D50_XY * yd65 + D65_TO_D50_XZ * zd65,\n    y: D65_TO_D50_YX * xd65 + D65_TO_D50_YY * yd65 + D65_TO_D50_YZ * zd65,\n    z: D65_TO_D50_ZX * xd65 + D65_TO_D50_ZY * yd65 + D65_TO_D50_ZZ * zd65,\n    alpha: clamp(round(alpha, 3), 0, 1),\n  };\n};\n\n/** Zero-allocation sibling of xyzD50ToLinearSrgb — writes [lr, lg, lb] into `out`. */\nexport const xyzD50ToLinearSrgbInto = (out: Float64Array | number[], x: number, y: number, z: number): void => {\n  const xd65 = D50_TO_D65_XX * x + D50_TO_D65_XY * y + D50_TO_D65_XZ * z;\n  const yd65 = D50_TO_D65_YX * x + D50_TO_D65_YY * y + D50_TO_D65_YZ * z;\n  const zd65 = D50_TO_D65_ZX * x + D50_TO_D65_ZY * y + D50_TO_D65_ZZ * z;\n  out[0] = X_RX * xd65 + X_RY * yd65 + X_RZ * zd65;\n  out[1] = X_GX * xd65 + X_GY * yd65 + X_GZ * zd65;\n  out[2] = X_BX * xd65 + X_BY * yd65 + X_BZ * zd65;\n};\n\n/** XYZ D50 → linear sRGB (no gamma, no clamping). x/y/z are in 0–100 scale. */\nexport const xyzD50ToLinearSrgb = (x: number, y: number, z: number): [number, number, number] => {\n  const xd65 = D50_TO_D65_XX * x + D50_TO_D65_XY * y + D50_TO_D65_XZ * z;\n  const yd65 = D50_TO_D65_YX * x + D50_TO_D65_YY * y + D50_TO_D65_YZ * z;\n  const zd65 = D50_TO_D65_ZX * x + D50_TO_D65_ZY * y + D50_TO_D65_ZZ * z;\n  return [\n    X_RX * xd65 + X_RY * yd65 + X_RZ * zd65,\n    X_GX * xd65 + X_GY * yd65 + X_GZ * zd65,\n    X_BX * xd65 + X_BY * yd65 + X_BZ * zd65,\n  ];\n};\n\nexport const xyzToRgb = ({ x, y, z, alpha }: XyzColor): RgbColor => {\n  const [lr, lg, lb] = xyzD50ToLinearSrgb(x, y, z);\n  return clampRgb({\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  });\n};\n\n/** Unclamped XYZ D50 → gamma-encoded sRGB. Channels may exceed [0, 255] for out-of-sRGB-gamut colors. */\nconst xyzToRgbUnclamped = ({ x, y, z, alpha }: XyzColor): RgbColor => {\n  const [lr, lg, lb] = xyzD50ToLinearSrgb(x, y, z);\n  return {\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  };\n};\n\n// ── Parsers ─────────────────────────────────────────────────────────────────\n\nexport const parseXyzObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  // Reject D65-discriminated objects — parseXyzD65Object owns those.\n  if ((input as { colorSpace?: unknown }).colorSpace === 'xyz-d65') return null;\n  if (!hasKeys(input, ['x', 'y', 'z'])) return null;\n  const { x, y, z, alpha = 1 } = input as { x: unknown; y: unknown; z: unknown; alpha?: unknown };\n  if (!isNumber(x) || !isNumber(y) || !isNumber(z) || !isNumber(alpha)) return null;\n  return xyzToRgbUnclamped({\n    x,\n    y,\n    z,\n    alpha: clamp(alpha, 0, 1),\n  });\n};\n\nexport const parseXyzD65Object = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'xyz-d65') return null;\n  if (!hasKeys(input, ['x', 'y', 'z'])) return null;\n  const { x, y, z, alpha = 1 } = input as { x: unknown; y: unknown; z: unknown; alpha?: unknown };\n  if (!isAnyNumber(x) || !isAnyNumber(y) || !isAnyNumber(z) || !isAnyNumber(alpha)) return null;\n  return xyzD65ToRgbUnclamped({\n    x: sanitize(x),\n    y: sanitize(y),\n    z: sanitize(z),\n    alpha: clamp(sanitize(alpha), 0, 1),\n    colorSpace: 'xyz-d65',\n  });\n};\n\n// CSS Color 4: color(xyz-d65 x y z / alpha). Channels accept number|percentage|none.\n// The library uses a 0–100 XYZ scale (to match the existing XyzColor convention); percent is\n// treated as the same scale for symmetry with the emitted string (100% = 100).\nconst XYZ_D65_RE = new RegExp(\n  `^color\\\\(\\\\s*xyz-d65\\\\s+(?<x>${NUM_OR_NONE})(?<xp>%?)\\\\s+(?<y>${NUM_OR_NONE})(?<yp>%?)` +\n    `\\\\s+(?<z>${NUM_OR_NONE})(?<zp>%?)\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nconst XYZ_D50_RE = new RegExp(\n  `^color\\\\(\\\\s*xyz-d50\\\\s+(?<x>${NUM_OR_NONE})(?<xp>%?)\\\\s+(?<y>${NUM_OR_NONE})(?<yp>%?)` +\n    `\\\\s+(?<z>${NUM_OR_NONE})(?<zp>%?)\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseXyzD65String = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = XYZ_D65_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const x = parseNum(g.x!);\n  const y = parseNum(g.y!);\n  const z = parseNum(g.z!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return xyzD65ToRgbUnclamped({\n    x,\n    y,\n    z,\n    alpha: clamp(alpha, 0, 1),\n    colorSpace: 'xyz-d65',\n  });\n};\n\nexport const parseXyzD50String = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = XYZ_D50_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const x = parseNum(g.x!);\n  const y = parseNum(g.y!);\n  const z = parseNum(g.z!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return xyzToRgbUnclamped({\n    x,\n    y,\n    z,\n    alpha: clamp(alpha, 0, 1),\n  });\n};\n","import { NUM_OR_NONE, clamp, hasKeys, isAnyNumber, isObject, parseNum, round, sanitize } from '../helpers.js';\nimport { srgbFromLinear, srgbToLinear } from '../transfer.js';\nimport type { LabColor, RgbColor, XyzColor } from '../types.js';\nimport { D50_WX as WX, D50_WY as WY, D50_WZ as WZ, rgbToXyz, xyzD50ToLinearSrgb, xyzToRgb } from './xyz.js';\n\n// D65 white point derived from CIE chromaticity (x=0.3127, y=0.329)\nconst D65_WX = (0.3127 / 0.329) * 100;\nconst D65_WY = 100;\nconst D65_WZ = ((1 - 0.3127 - 0.329) / 0.329) * 100;\n\nconst EPSILON = 216 / 24389;\nconst KAPPA = 24389 / 27;\n\nconst f = (t: number) => (t > EPSILON ? Math.cbrt(t) : (KAPPA * t + 16) / 116);\n\nexport const xyzToLab = ({ x, y, z, alpha }: XyzColor): LabColor => {\n  const fy = f(y / WY);\n  return {\n    l: 116 * fy - 16,\n    a: 500 * (f(x / WX) - fy) || 0, // || 0 suppresses −0; NaN is impossible since WX/WZ are non-zero constants\n    b: 200 * (fy - f(z / WZ)) || 0,\n    alpha: round(alpha, 3),\n    colorSpace: 'lab' as const,\n  };\n};\n\n/** Primitives-only Lab → XYZ D50. x/y/z in 0–100 scale. Shared with channels.ts hot paths. */\nexport const labToXyzValues = (l: number, a: number, b: number): [number, number, number] => {\n  const fy = (l + 16) / 116;\n  const fx = a / 500 + fy;\n  const fz = fy - b / 200;\n  return [\n    (fx ** 3 > EPSILON ? fx ** 3 : (116 * fx - 16) / KAPPA) * WX,\n    (l > 8 ? fy ** 3 : l / KAPPA) * WY,\n    (fz ** 3 > EPSILON ? fz ** 3 : (116 * fz - 16) / KAPPA) * WZ,\n  ];\n};\n\n/** Zero-allocation sibling of labToXyzValues — writes [x, y, z] into `out`. */\nexport const labToXyzValuesInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  const fy = (l + 16) / 116;\n  const fx = a / 500 + fy;\n  const fz = fy - b / 200;\n  out[0] = (fx ** 3 > EPSILON ? fx ** 3 : (116 * fx - 16) / KAPPA) * WX;\n  out[1] = (l > 8 ? fy ** 3 : l / KAPPA) * WY;\n  out[2] = (fz ** 3 > EPSILON ? fz ** 3 : (116 * fz - 16) / KAPPA) * WZ;\n};\n\nexport const labToXyz = ({ l, a, b, alpha }: LabColor): XyzColor => {\n  const [x, y, z] = labToXyzValues(l, a, b);\n  return { x, y, z, alpha };\n};\n\nexport const rgbToLab = (rgb: RgbColor): LabColor => xyzToLab(rgbToXyz(rgb));\n\n/** RGB → CIE Lab using D65 white point (screen-native; used for perceptual difference). */\nexport const rgbToLabD65 = ({ r, g, b, alpha }: RgbColor): LabColor => {\n  const lr = srgbToLinear(r / 255),\n    lg = srgbToLinear(g / 255),\n    lb = srgbToLinear(b / 255);\n  const x = 100 * (0.41239079926595951 * lr + 0.35758433938387796 * lg + 0.18048078840183429 * lb);\n  const y = 100 * (0.21263900587151036 * lr + 0.71516867876775592 * lg + 0.072192315360733714 * lb);\n  const z = 100 * (0.019330818715591849 * lr + 0.11919477979462599 * lg + 0.95053215224966059 * lb);\n  const fy = f(y / D65_WY);\n  return {\n    l: 116 * fy - 16,\n    a: 500 * (f(x / D65_WX) - fy) || 0,\n    b: 200 * (fy - f(z / D65_WZ)) || 0,\n    alpha: round(alpha, 3),\n    colorSpace: 'lab' as const,\n  };\n};\n\nexport const deltaE2000 = (lab1: LabColor, lab2: LabColor): number => {\n  const { l: L1, a: a1, b: b1 } = lab1;\n  const { l: L2, a: a2, b: b2 } = lab2;\n  const rad = Math.PI / 180;\n  const deg = 180 / Math.PI;\n\n  const C1 = Math.sqrt(a1 ** 2 + b1 ** 2);\n  const C2 = Math.sqrt(a2 ** 2 + b2 ** 2);\n  const Cab = ((C1 + C2) / 2) ** 7;\n  const G = 0.5 * (1 - Math.sqrt(Cab / (Cab + 25 ** 7)));\n  const a1p = a1 * (1 + G);\n  const a2p = a2 * (1 + G);\n  const C1p = Math.sqrt(a1p ** 2 + b1 ** 2);\n  const C2p = Math.sqrt(a2p ** 2 + b2 ** 2);\n  const Cp = (C1p + C2p) / 2;\n\n  const h1p = a1p === 0 && b1 === 0 ? 0 : Math.atan2(b1, a1p) * deg;\n  const h2p = a2p === 0 && b2 === 0 ? 0 : Math.atan2(b2, a2p) * deg;\n  const h1 = h1p < 0 ? h1p + 360 : h1p;\n  const h2 = h2p < 0 ? h2p + 360 : h2p;\n\n  let dhp = h2 - h1;\n  const absDh = Math.abs(h2 - h1);\n  if (absDh > 180 && h2 <= h1) dhp += 360;\n  else if (absDh > 180 && h2 > h1) dhp -= 360;\n\n  const Lm = (L1 + L2) / 2;\n  let Hm = h1 + h2;\n  if (absDh <= 180) Hm /= 2;\n  else Hm = (h1 + h2 < 360 ? Hm + 360 : Hm - 360) / 2;\n\n  const T =\n    1 -\n    0.17 * Math.cos(rad * (Hm - 30)) +\n    0.24 * Math.cos(2 * rad * Hm) +\n    0.32 * Math.cos(rad * (3 * Hm + 6)) -\n    0.2 * Math.cos(rad * (4 * Hm - 63));\n\n  const dLp = L2 - L1;\n  const dCp = C2p - C1p;\n  const dHp = 2 * Math.sin((rad * dhp) / 2) * Math.sqrt(C1p * C2p);\n\n  const SL = 1 + (0.015 * (Lm - 50) ** 2) / Math.sqrt(20 + (Lm - 50) ** 2);\n  const SC = 1 + 0.045 * Cp;\n  const SH = 1 + 0.015 * Cp * T;\n\n  const RC7 = Cp ** 7;\n  const RC = 2 * Math.sqrt(RC7 / (RC7 + 25 ** 7));\n  const dTheta = 30 * Math.exp(-(((Hm - 275) / 25) ** 2));\n  const RT = -RC * Math.sin(2 * rad * dTheta);\n\n  return Math.sqrt((dLp / SL) ** 2 + (dCp / SC) ** 2 + (dHp / SH) ** 2 + RT * (dCp / SC) * (dHp / SH));\n};\n\nexport const labToRgb = (lab: LabColor): RgbColor => xyzToRgb(labToXyz(lab));\n\n/**\n * Unclamped Lab (D50) → gamma-encoded sRGB (0–255). Channels may exceed [0, 255] or go\n * negative for colors outside the sRGB gamut. Preserves out-of-gamut information so callers\n * (mapSrgb, inGamut*) can detect and map the color; sRGB output methods clamp at the edge.\n */\nexport const labToRgbUnclamped = ({ l, a, b, alpha }: LabColor): RgbColor => {\n  const [x, y, z] = labToXyzValues(l, a, b);\n  const [lr, lg, lb] = xyzD50ToLinearSrgb(x, y, z);\n  return {\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  };\n};\n\n// CSS Color 4: lab(L a b / alpha). L: number|percentage|none (100% = 100).\n// a/b: number|percentage|none (100% = 125).\nconst LAB_RE = new RegExp(\n  `^lab\\\\(\\\\s*(?<l>${NUM_OR_NONE})(?<lp>%?)\\\\s+(?<a>${NUM_OR_NONE})(?<ap>%?)\\\\s+(?<b>${NUM_OR_NONE})(?<bp>%?)` +\n    `\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseLabString = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = LAB_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const l = parseNum(g.l!); // 100% = 100, so value is unchanged whether `%` present\n  const a = g.ap ? parseNum(g.a!) * 1.25 : parseNum(g.a!);\n  const b = g.bp ? parseNum(g.b!) * 1.25 : parseNum(g.b!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return labToRgbUnclamped({\n    l: clamp(l, 0, 100),\n    a,\n    b,\n    alpha: clamp(alpha, 0, 1),\n    colorSpace: 'lab',\n  });\n};\n\nexport const parseLabObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'lab') return null;\n  if (!hasKeys(input, ['l', 'a', 'b'])) return null;\n  const { l, a, b, alpha = 1 } = input as { l: unknown; a: unknown; b: unknown; alpha?: unknown };\n  if (!isAnyNumber(l) || !isAnyNumber(a) || !isAnyNumber(b) || !isAnyNumber(alpha)) return null;\n  return labToRgbUnclamped({\n    l: clamp(sanitize(l), 0, 100),\n    a: sanitize(a),\n    b: sanitize(b),\n    alpha: clamp(sanitize(alpha), 0, 1),\n    colorSpace: 'lab',\n  });\n};\n"]}

dist/index.cjs

@@ -1,2 +0,2 @@
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dist/index.mjs

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u({r:Math.round(Math.random()*255),g:Math.round(Math.random()*255),b:Math.round(Math.random()*255),alpha:1});u.toGamutSrgb=l=>{let r=b$5(l);return r!==null?u._makeFromOklab(r):new u(l)};export{u as Colordx,vr as colordx,Nr as extend,Ar as getFormat,Fr as nearest,jr as random,Mr as toHex8};//# sourceMappingURL=index.mjs.map
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null;let{l:r,c:o,h:t,alpha:n=1}=l;return !f(r)||!f(o)||!f(t)||!f(n)||g$1(r)>1?null:Z({l:g$1(r),c:Math.max(0,g$1(o)),h:c$1(g$1(t)),alpha:a(g$1(n),0,1)})},Pr=new RegExp(`^oklch\\(\\s*(?<l>${k$1})(?<lp>%?)\\s+(?<c>${k$1})(?<cp>%?)\\s+(?<h>${k$1})(?<hu>deg|rad|grad|turn)?\\s*(?:/\\s*(?<al>${k$1})(?<alp>%?)\\s*)?\\)$`,"i"),or=l$1=>{if(typeof l$1!="string")return null;let r=Pr.exec(l$1.trim())?.groups;if(!r)return null;let o=r.lp?l(r.l)/100:l(r.l),t=Math.max(0,r.cp?l(r.c)*.004:l(r.c)),n=r.hu?.toLowerCase()??"deg",e=l(r.h)*(d[n]??1),s=r.al===void 0?1:l(r.al)/(r.alp?100:1);return Z({l:o,c:t,h:c$1(e),alpha:a(s,0,1)})};var tr=[[b,"hex"],[c,"rgb"],[Q,"hsl"],[or,"oklch"],[h,"oklab"]],lr=[[b$1,"rgb"],[J,"hsl"],[g,"oklab"],[rr,"oklch"]],nr=tr.map(([l])=>l),er=lr.map(([l])=>l),sr=[...nr,...er],P=[...sr],N=[],ar=l=>{if(l==="transparent")return {r:0,g:0,b:0,alpha:0};let r=typeof l=="string"?nr:er;for(let o of r){let t=o(l);if(t)return t}for(let o=sr.length;o<P.length;o++){let t=P[o](l);if(t)return 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this.brightness()<.5}isLight(){return this.brightness()>=.5}alpha(r){return r===void 0?this._rgb.alpha:l._make({...this._rgb,alpha:b$2(a(r,0,1),3)})}hue(r){let{h:o,s:t,l:n,alpha:e}=R(this._rgb);if(r===void 0){let s=b$2(o,2);return s>=360?0:s}return l._make(k({h:r,s:t,l:n,alpha:e}))}lightness(r){let o=this.toOklch();return r===void 0?o.l:l._make(M({...o,l:a(r,0,1)}))}chroma(r){let o=this.toOklch();return r===void 0?o.c:l._make(M({...o,c:a(r,0,.4)}))}lighten(r=.1,o){let{h:t,s:n,l:e,alpha:s}=R(this._rgb),a$1=o?.relative?e*(1+r):e+r*100;return l._make(k({h:t,s:n,l:a(a$1,0,100),alpha:s}))}darken(r=.1,o){return this.lighten(-r,o)}saturate(r=.1,o){let{h:t,s:n,l:e,alpha:s}=R(this._rgb),a$1=o?.relative?n*(1+r):n+r*100;return l._make(k({h:t,s:a(a$1,0,100),l:e,alpha:s}))}desaturate(r=.1,o){return this.saturate(-r,o)}grayscale(){return this.desaturate(1)}invert(){let{r,g:o,b:t,alpha:n}=this._rgb;return l._make({r:255-r,g:255-o,b:255-t,alpha:n})}rotate(r=15){return 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u({r:Math.round(Math.random()*255),g:Math.round(Math.random()*255),b:Math.round(Math.random()*255),alpha:1});u.toGamutSrgb=l=>{let r=p(l);return r!==null?u._makeFromOklab(r):new u(l)};export{u as Colordx,vr as colordx,Nr as extend,Ar as getFormat,Fr as nearest,jr as random,Mr as toHex8};//# sourceMappingURL=index.mjs.map
 //# sourceMappingURL=index.mjs.map

dist/index.mjs.map

@@ -1,1 +0,1 @@
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{\n  ANGLE_UNITS,\n  NUM,\n  NUM_OR_NONE,\n  clamp,\n  hasKeys,\n  isAnyNumber,\n  isObject,\n  normalizeHue,\n  parseNum,\n  round,\n  sanitize,\n} from '../helpers.js';\nimport type { HslColor, RgbColor } from '../types.js';\n\nexport const clampHsl = (hsl: HslColor): HslColor => ({\n  h: normalizeHue(hsl.h),\n  s: clamp(hsl.s, 0, 100),\n  l: clamp(hsl.l, 0, 100),\n  alpha: clamp(round(hsl.alpha, 3), 0, 1),\n});\n\n// Shared write buffer for rgbToHslRaw — callers must destructure immediately, never store the reference.\nconst _hslBuf: HslColor = { h: 0, s: 0, l: 0, alpha: 0 };\n\nexport const rgbToHslRaw = ({ r, g, b, alpha }: RgbColor): HslColor => {\n  const rn = r / 255,\n    gn = g / 255,\n    bn = b / 255;\n  const max = Math.max(rn, gn, bn),\n    min = Math.min(rn, gn, bn);\n  const l = (max + min) / 2;\n  let h = 0,\n    s = 0;\n\n  if (max !== min) {\n    const d = max - min;\n    s = l > 0.5 ? d / (2 - max - min) : d / (max + min);\n    switch (max) {\n      case rn:\n        h = ((gn - bn) / d + (gn < bn ? 6 : 0)) / 6;\n        break;\n      case gn:\n        h = ((bn - rn) / d + 2) / 6;\n        break;\n      case bn:\n        h = ((rn - gn) / d + 4) / 6;\n        break;\n    }\n  }\n\n  const hDeg = h * 360;\n  _hslBuf.h = hDeg >= 0 && hDeg < 360 ? hDeg : ((hDeg % 360) + 360) % 360;\n  _hslBuf.s = clamp(s * 100, 0, 100);\n  _hslBuf.l = clamp(l * 100, 0, 100);\n  _hslBuf.alpha = clamp(round(alpha, 3), 0, 1);\n  return _hslBuf;\n};\n\nexport const rgbToHsl = (rgb: RgbColor): HslColor => {\n  const { h, s, l, alpha } = rgbToHslRaw(rgb);\n  const hr = round(h, 2);\n  // round() can push a value just below 360 to 360.00 due to floating-point; clamp back to 0.\n  return { h: hr >= 360 ? 0 : hr, s: round(s, 2), l: round(l, 2), alpha };\n};\n\nconst _hueToRgb = (p: number, q: number, t: number): number => {\n  if (t < 0) t += 1;\n  if (t > 1) t -= 1;\n  if (t < 1 / 6) return p + (q - p) * 6 * t;\n  if (t < 1 / 2) return q;\n  if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;\n  return p;\n};\n\nexport const hslToRgb = ({ h, s, l, alpha }: HslColor): RgbColor => {\n  const sn = s / 100,\n    ln = l / 100;\n  const q = ln < 0.5 ? ln * (1 + sn) : ln + sn - ln * sn;\n  const p = 2 * ln - q;\n  const hue = (((h % 360) + 360) % 360) / 360;\n  return {\n    r: _hueToRgb(p, q, hue + 1 / 3) * 255,\n    g: _hueToRgb(p, q, hue) * 255,\n    b: _hueToRgb(p, q, hue - 1 / 3) * 255,\n    alpha,\n  };\n};\n\nexport const parseHslObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if (!hasKeys(input, ['h', 's', 'l'])) return null;\n  const { h, s, l, alpha = 1 } = input as { h: unknown; s: unknown; l: unknown; alpha?: unknown };\n  if (!isAnyNumber(h) || !isAnyNumber(s) || !isAnyNumber(l) || !isAnyNumber(alpha)) return null;\n  return hslToRgb(clampHsl({ h: sanitize(h), s: sanitize(s), l: sanitize(l), alpha: sanitize(alpha) }));\n};\n\n// Legacy comma form requires `%` on s/l and disallows `none`. Modern space form\n// allows optional `%` and the CSS Color 4 `none` keyword on any channel.\n// Named groups: `_c` = comma/legacy branch, `_s` = space/modern branch.\nconst HSL_RE = new RegExp(\n  `^hsla?\\\\(\\\\s*(?<h>${NUM_OR_NONE})(?<hu>deg|rad|grad|turn)?\\\\s*(?:` +\n    `,\\\\s*(?<s_c>${NUM})%\\\\s*,\\\\s*(?<l_c>${NUM})%` +\n    `(?:\\\\s*,\\\\s*(?<al_c>${NUM})(?<alp_c>%?)?\\\\s*)?` +\n    `|` +\n    `\\\\s+(?<s_s>${NUM_OR_NONE})(?<sp_s>%?)\\\\s+(?<l_s>${NUM_OR_NONE})(?<lp_s>%?)` +\n    `(?:\\\\s*/\\\\s*(?<al_s>${NUM_OR_NONE})(?<alp_s>%?)?\\\\s*)?` +\n    `)\\\\)$`,\n  'i'\n);\n\nexport const parseHslString = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = HSL_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const isComma = g.s_c !== undefined;\n  if (isComma && /^none$/i.test(g.h!)) return null; // legacy syntax has no `none`\n  const unit = g.hu?.toLowerCase() ?? 'deg';\n  const h = parseNum(g.h!) * (ANGLE_UNITS[unit] ?? 1);\n  const s = parseNum((g.s_c ?? g.s_s)!);\n  const l = parseNum((g.l_c ?? g.l_s)!);\n  const rawA = g.al_c ?? g.al_s;\n  const isPercent = !!(g.alp_c ?? g.alp_s);\n  if (isComma && rawA !== undefined && /^none$/i.test(rawA)) return null;\n  const alpha = rawA === undefined ? 1 : parseNum(rawA) / (isPercent ? 100 : 1);\n  return hslToRgb(clampHsl({ h, s, l, alpha }));\n};\n","import {\n  ANGLE_UNITS,\n  NUM_OR_NONE,\n  clamp,\n  hasKeys,\n  isAnyNumber,\n  isObject,\n  normalizeHue,\n  parseNum,\n  sanitize,\n} from '../helpers.js';\nimport type { OklabColor, OklchColor, RgbColor } from '../types.js';\nimport { oklabToRgb, oklabToRgbUnclamped, rgbToOklab } from './oklab.js';\n\nconst oklchToOklab = ({ l, c, h, alpha }: OklchColor): OklabColor => ({\n  l,\n  a: c * Math.cos((h * Math.PI) / 180),\n  b: c * Math.sin((h * Math.PI) / 180),\n  alpha,\n});\n\nexport const rgbToOklch = (rgb: RgbColor): OklchColor => {\n  const { l: ol, a: oa, b: ob, alpha } = rgbToOklab(rgb);\n  const C = Math.sqrt(oa * oa + ob * ob);\n  const H = (Math.atan2(ob, oa) * 180) / Math.PI;\n  // Achromatic threshold on OKLCH scale (0–~0.4): proportionally equivalent to LCH's 0.0015 threshold.\n  return { l: ol, c: C, h: C < 0.000004 ? 0 : normalizeHue(H), alpha };\n};\n\nexport const oklchToRgb = (oklch: OklchColor): RgbColor => oklabToRgb(oklchToOklab(oklch));\nconst oklchToRgbUnclamped = (oklch: OklchColor): RgbColor => oklabToRgbUnclamped(oklchToOklab(oklch));\n\nexport const parseOklchObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  // Objects with colorSpace: 'lch' are CIE LCH, not OKLCH — let parseLchObject handle them.\n  if ((input as { colorSpace?: unknown }).colorSpace === 'lch') return null;\n  if (!hasKeys(input, ['l', 'c', 'h'])) return null;\n  const { l, c, h, alpha = 1 } = input as { l: unknown; c: unknown; h: unknown; alpha?: unknown };\n  if (!isAnyNumber(l) || !isAnyNumber(c) || !isAnyNumber(h) || !isAnyNumber(alpha)) return null;\n  if (sanitize(l) > 1) return null; // OKLCH L is always [0, 1]; reject CIE LCH values passed without colorSpace branding\n  return oklchToRgbUnclamped({\n    l: sanitize(l),\n    c: Math.max(0, sanitize(c)),\n    h: normalizeHue(sanitize(h)),\n    alpha: clamp(sanitize(alpha), 0, 1),\n  });\n};\n\nconst OKLCH_RE = new RegExp(\n  `^oklch\\\\(\\\\s*(?<l>${NUM_OR_NONE})(?<lp>%?)\\\\s+(?<c>${NUM_OR_NONE})(?<cp>%?)` +\n    `\\\\s+(?<h>${NUM_OR_NONE})(?<hu>deg|rad|grad|turn)?` +\n    `\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseOklchString = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = OKLCH_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const L = g.lp ? parseNum(g.l!) / 100 : parseNum(g.l!); // 100% = 1\n  const C = Math.max(0, g.cp ? parseNum(g.c!) * 0.004 : parseNum(g.c!)); // 100% = 0.4\n  const unit = g.hu?.toLowerCase() ?? 'deg';\n  const H = parseNum(g.h!) * (ANGLE_UNITS[unit] ?? 1);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return oklchToRgbUnclamped({\n    l: L,\n    c: C,\n    h: normalizeHue(H),\n    alpha: clamp(alpha, 0, 1),\n  });\n};\n","import { parseHex } from './colorModels/hex.js';\nimport { parseHslObject, parseHslString } from './colorModels/hsl.js';\nimport { parseOklabObject, parseOklabString } from './colorModels/oklab.js';\nimport { parseOklchObject, parseOklchString } from './colorModels/oklch.js';\nimport { parseRgbObject, parseRgbString } from './colorModels/rgb.js';\nimport type { AnyColor, ColorFormat, ColorParser, RgbColor } from './types.js';\n\nconst stringFormatParsers: [ColorParser, ColorFormat][] = [\n  [parseHex, 'hex'],\n  [parseRgbString, 'rgb'],\n  [parseHslString, 'hsl'],\n  [parseOklchString, 'oklch'],\n  [parseOklabString, 'oklab'],\n];\n\nconst objectFormatParsers: [ColorParser, ColorFormat][] = [\n  [parseRgbObject, 'rgb'],\n  [parseHslObject, 'hsl'],\n  [parseOklabObject, 'oklab'],\n  [parseOklchObject, 'oklch'],\n];\n\nconst builtinStringParsers: ColorParser[] = stringFormatParsers.map(([p]) => p);\nconst builtinObjectParsers: ColorParser[] = objectFormatParsers.map(([p]) => p);\n\nexport const defaultParsers: ColorParser[] = [...builtinStringParsers, ...builtinObjectParsers];\nexport const parsers: ColorParser[] = [...defaultParsers];\nexport const pluginFormatParsers: [ColorParser, ColorFormat][] = [];\n\nexport const parse = (input: AnyColor): RgbColor | null => {\n  if (input === 'transparent') return { r: 0, g: 0, b: 0, alpha: 0 };\n  const builtins = typeof input === 'string' ? builtinStringParsers : builtinObjectParsers;\n  for (const parser of builtins) {\n    const result = parser(input);\n    if (result) return result;\n  }\n  for (let i = defaultParsers.length; i < parsers.length; i++) {\n    const result = parsers[i]!(input);\n    if (result) return result;\n  }\n  return null;\n};\n\nexport const getFormat = (input: AnyColor): ColorFormat | undefined => {\n  if (input === 'transparent') return 'name';\n  const typed = typeof input === 'string' ? stringFormatParsers : objectFormatParsers;\n  for (const [parser, format] of typed) {\n    if (parser(input)) return format;\n  }\n  for (const [parser, format] of pluginFormatParsers) {\n    if (parser(input)) return format;\n  }\n  return undefined;\n};\n","import { rgbToHex, rgbToHex8 } from './colorModels/hex.js';\nimport { hslToRgb, rgbToHslRaw } from './colorModels/hsl.js';\nimport { linearSrgbToOklab, oklabToLinear, rgbToOklab } from './colorModels/oklab.js';\nimport { oklchToRgb, rgbToOklch } from './colorModels/oklch.js';\nimport { toGamutSrgbRaw } from './gamut.js';\nimport { clamp, round } from './helpers.js';\nimport { parse, parsers, pluginFormatParsers } from './parse.js';\nimport { srgbFromLinear, srgbToLinear } from './transfer.js';\nimport type { AnyColor, ColorFormat, ColorParser, HslColor, OklabColor, OklchColor, RgbColor } from './types.js';\n\nconst _SENTINEL: unique symbol = Symbol();\n\nexport class Colordx {\n  private readonly _rgb: RgbColor;\n  private readonly _valid: boolean;\n\n  constructor(input: AnyColor | Colordx | typeof _SENTINEL, _direct?: RgbColor) {\n    if (input === _SENTINEL) {\n      this._valid = true;\n      this._rgb = _direct!;\n    } else if (input instanceof Colordx) {\n      this._valid = input._valid;\n      this._rgb = input._rgb;\n      return;\n    } else {\n      const parsed = parse(input);\n      this._valid = parsed !== null;\n      this._rgb = parsed ?? { r: 0, g: 0, b: 0, alpha: 1 };\n    }\n    // Single chokepoint for alpha precision: parsers and _make() callers may hand us\n    // raw floats (e.g. 1/255, 0.1+0.2). Snapping here keeps every formatter consistent.\n    this._rgb.alpha = clamp(round(this._rgb.alpha, 3), 0, 1);\n  }\n\n  private static _make(rgb: RgbColor): Colordx {\n    return new Colordx(_SENTINEL, rgb);\n  }\n\n  /**\n   * Construct a Colordx from OKLab values, storing unclamped gamma-encoded sRGB internally.\n   * Unlike new Colordx(oklabObject), this does NOT clamp channels to [0, 1] before gamma encoding,\n   * so wide-gamut P3/Rec2020 colors are preserved accurately for toP3() / toRec2020() output.\n   * sRGB output methods (toRgb, toHex, etc.) clamp to [0, 255] before returning.\n   */\n  static _makeFromOklab({ l, a, b, alpha }: OklabColor): Colordx {\n    const [lr, lg, lb] = oklabToLinear(l, a, b);\n    return Colordx._make({\n      r: srgbFromLinear(lr) * 255,\n      g: srgbFromLinear(lg) * 255,\n      b: srgbFromLinear(lb) * 255,\n      alpha,\n    });\n  }\n\n  isValid(): boolean {\n    return this._valid;\n  }\n\n  toRgb(): RgbColor {\n    const { r, g, b, alpha } = this._rgb;\n    return { r: clamp(round(r), 0, 255), g: clamp(round(g), 0, 255), b: clamp(round(b), 0, 255), alpha };\n  }\n\n  /** Returns the internal unrounded RGB. Intended for plugin use where deferred rounding matters. */\n  _rawRgb(): RgbColor {\n    return this._rgb;\n  }\n\n  /**\n   * Format as a `rgb()` / `rgba()` CSS string.\n   * Default is CSS Color 4 modern syntax (space-separated, slash-delimited alpha):\n   *   `rgb(255 0 0)` / `rgb(255 0 0 / 0.5)`\n   * Pass `{ legacy: true }` for CSS Color 3 comma-separated syntax, which also\n   * switches the function name to `rgba()` when alpha < 1:\n   *   `rgb(255, 0, 0)` / `rgba(255, 0, 0, 0.5)`\n   */\n  toRgbString(options?: { legacy?: boolean }): string {\n    const { r, g, b, alpha } = this._rgb;\n    const ri = clamp(round(r), 0, 255),\n      gi = clamp(round(g), 0, 255),\n      bi = clamp(round(b), 0, 255);\n    if (options?.legacy) {\n      return alpha < 1 ? `rgba(${ri}, ${gi}, ${bi}, ${alpha})` : `rgb(${ri}, ${gi}, ${bi})`;\n    }\n    return alpha < 1 ? `rgb(${ri} ${gi} ${bi} / ${alpha})` : `rgb(${ri} ${gi} ${bi})`;\n  }\n\n  toHex(): string {\n    return rgbToHex(this._rgb);\n  }\n\n  /** Always returns an 8-digit `#rrggbbaa`, even when alpha is 1. */\n  toHex8(): string {\n    return rgbToHex8(this._rgb);\n  }\n\n  /** Returns a 24-bit RGB integer (0x000000–0xFFFFFF). Alpha is not included. */\n  toNumber(): number {\n    const { r, g, b } = this._rgb;\n    return (clamp(round(r), 0, 255) << 16) | (clamp(round(g), 0, 255) << 8) | clamp(round(b), 0, 255);\n  }\n\n  toHsl(precision = 2): HslColor {\n    const { h, s, l, alpha } = rgbToHslRaw(this._rgb);\n    const hr = round(h, precision);\n    return { h: hr >= 360 ? 0 : hr, s: round(s, precision), l: round(l, precision), alpha };\n  }\n\n  toHslString(precision = 2): string {\n    const { h, s, l, alpha } = this.toHsl(precision);\n    return alpha < 1 ? `hsl(${h} ${s}% ${l}% / ${alpha})` : `hsl(${h} ${s}% ${l}%)`;\n  }\n\n  toOklab(precision = 4): OklabColor {\n    const { l, a, b, alpha } = rgbToOklab(this._rgb);\n    return { l: round(l, precision), a: round(a, precision), b: round(b, precision), alpha };\n  }\n\n  toOklabString(precision = 4): string {\n    const { l, a, b, alpha } = this.toOklab(precision);\n    return alpha < 1 ? `oklab(${l} ${a} ${b} / ${alpha})` : `oklab(${l} ${a} ${b})`;\n  }\n\n  toOklch(precision = 4): OklchColor {\n    const { l, c, h, alpha } = rgbToOklch(this._rgb);\n    return { l: round(l, precision), c: round(c, precision), h: round(h, precision), alpha };\n  }\n\n  toOklchString(precision = 4): string {\n    const { l, c, h, alpha } = this.toOklch(precision);\n    const H = c === 0 ? 'none' : h;\n    return alpha < 1 ? `oklch(${l} ${c} ${H} / ${alpha})` : `oklch(${l} ${c} ${H})`;\n  }\n\n  brightness(): number {\n    const { r, g, b } = this._rgb;\n    return round((r * 299 + g * 587 + b * 114) / 255000, 2);\n  }\n\n  isDark(): boolean {\n    return this.brightness() < 0.5;\n  }\n\n  isLight(): boolean {\n    return this.brightness() >= 0.5;\n  }\n\n  alpha(): number;\n  alpha(value: number): Colordx;\n  alpha(value?: number): number | Colordx {\n    if (value === undefined) return this._rgb.alpha;\n    return Colordx._make({ ...this._rgb, alpha: round(clamp(value, 0, 1), 3) });\n  }\n\n  hue(): number;\n  hue(value: number): Colordx;\n  hue(value?: number): number | Colordx {\n    const { h, s, l, alpha } = rgbToHslRaw(this._rgb);\n    if (value === undefined) {\n      const hr = round(h, 2);\n      return hr >= 360 ? 0 : hr;\n    }\n    return Colordx._make(hslToRgb({ h: value, s, l, alpha }));\n  }\n\n  lightness(): number;\n  lightness(value: number): Colordx;\n  lightness(value?: number): number | Colordx {\n    const oklch = this.toOklch();\n    if (value === undefined) return oklch.l;\n    return Colordx._make(oklchToRgb({ ...oklch, l: clamp(value, 0, 1) }));\n  }\n\n  chroma(): number;\n  chroma(value: number): Colordx;\n  chroma(value?: number): number | Colordx {\n    const oklch = this.toOklch();\n    if (value === undefined) return oklch.c;\n    return Colordx._make(oklchToRgb({ ...oklch, c: clamp(value, 0, 0.4) }));\n  }\n\n  lighten(amount = 0.1, options?: { relative?: boolean }): Colordx {\n    const { h, s, l, alpha } = rgbToHslRaw(this._rgb);\n    const newL = options?.relative ? l * (1 + amount) : l + amount * 100;\n    return Colordx._make(hslToRgb({ h, s, l: clamp(newL, 0, 100), alpha }));\n  }\n\n  darken(amount = 0.1, options?: { relative?: boolean }): Colordx {\n    return this.lighten(-amount, options);\n  }\n\n  saturate(amount = 0.1, options?: { relative?: boolean }): Colordx {\n    const { h, s, l, alpha } = rgbToHslRaw(this._rgb);\n    const newS = options?.relative ? s * (1 + amount) : s + amount * 100;\n    return Colordx._make(hslToRgb({ h, s: clamp(newS, 0, 100), l, alpha }));\n  }\n\n  desaturate(amount = 0.1, options?: { relative?: boolean }): Colordx {\n    return this.saturate(-amount, options);\n  }\n\n  grayscale(): Colordx {\n    return this.desaturate(1);\n  }\n\n  invert(): Colordx {\n    const { r, g, b, alpha } = this._rgb;\n    return Colordx._make({ r: 255 - r, g: 255 - g, b: 255 - b, alpha });\n  }\n\n  rotate(amount = 15): Colordx {\n    return this.hue(this.hue() + amount);\n  }\n\n  isEqual(color: AnyColor): boolean {\n    const other = new Colordx(color).toRgb();\n    const self = this.toRgb();\n    return self.r === other.r && self.g === other.g && self.b === other.b && self.alpha === other.alpha;\n  }\n\n  toString(): string {\n    return this.toHex();\n  }\n\n  /**\n   * Clips this color into the sRGB gamut by clamping out-of-range channels to [0, 255].\n   * Matches the naive-clip strategy browsers use when rendering out-of-gamut `oklch()` / `oklab()`.\n   * Hue and lightness may shift noticeably for colors far outside sRGB.\n   * Returns `this` when already in gamut.\n   */\n  clampSrgb(): Colordx {\n    const { r, g, b, alpha } = this._rgb;\n    if (r >= 0 && r <= 255 && g >= 0 && g <= 255 && b >= 0 && b <= 255) return this;\n    return Colordx._make({\n      r: clamp(r, 0, 255),\n      g: clamp(g, 0, 255),\n      b: clamp(b, 0, 255),\n      alpha,\n    });\n  }\n\n  /**\n   * Maps this color into the sRGB gamut using the CSS Color 4 gamut mapping algorithm\n   * (chroma-reduction binary search). Preserves lightness and hue; sacrifices chroma.\n   * Useful when hue stability matters — design tokens, palettes, color pickers.\n   * Returns `this` when already in gamut.\n   */\n  mapSrgb(): Colordx {\n    const { r, g, b, alpha } = this._rgb;\n    if (r >= 0 && r <= 255 && g >= 0 && g <= 255 && b >= 0 && b <= 255) return this;\n    const [lRaw, a, bv] = linearSrgbToOklab(srgbToLinear(r / 255), srgbToLinear(g / 255), srgbToLinear(b / 255));\n    // The gamma-encoded round-trip drifts L by ~1e-9 at boundaries; snap so that inputs with\n    // exact L=0 or L=1 hit the same white/black shortcut the static gamut map uses.\n    const l = lRaw > 1 - 1e-7 ? 1 : lRaw < 1e-7 ? 0 : lRaw;\n    const mapped = toGamutSrgbRaw({ l, a, b: bv, alpha });\n    return mapped !== null ? Colordx._makeFromOklab(mapped) : this;\n  }\n\n  /**\n   * Maps an out-of-sRGB-gamut color into sRGB using the CSS Color 4 gamut mapping algorithm.\n   * Colors already in gamut are returned as-is. sRGB inputs (hex, rgb, hsl, etc.) are passed through.\n   */\n  static toGamutSrgb: (input: AnyColor) => Colordx;\n}\n\nexport type Plugin = (\n  ColordxClass: typeof Colordx,\n  parsers: ColorParser[],\n  formatParsers: [ColorParser, ColorFormat][]\n) => void;\n\nexport const colordx = (input: AnyColor | Colordx): Colordx => new Colordx(input);\n\n/** Emit an 8-digit `#rrggbbaa` hex for any color input. Convenience over `colordx(c).toHex8()`. */\nexport const toHex8 = (input: AnyColor | Colordx): string => new Colordx(input).toHex8();\n\nexport const extend = (plugins: Plugin[]): void => {\n  plugins.forEach((plugin) => plugin(Colordx, parsers, pluginFormatParsers));\n};\n\nexport const nearest = <T extends AnyColor>(color: AnyColor, candidates: T[]): T => {\n  if (candidates.length === 0) throw new Error('nearest: candidates array must not be empty');\n  const { l: l1, a: a1, b: b1 } = new Colordx(color).toOklab();\n  let minDist = Infinity;\n  let result = candidates[0] as T;\n  for (const candidate of candidates) {\n    const { l: l2, a: a2, b: b2 } = new Colordx(candidate).toOklab();\n    const dist = (l2 - l1) ** 2 + (a2 - a1) ** 2 + (b2 - b1) ** 2;\n    if (dist < minDist) {\n      minDist = dist;\n      result = candidate;\n    }\n  }\n  return result;\n};\n\nexport const random = (): Colordx =>\n  new Colordx({\n    r: Math.round(Math.random() * 255),\n    g: Math.round(Math.random() * 255),\n    b: Math.round(Math.random() * 255),\n    alpha: 1,\n  });\n\nColordx.toGamutSrgb = (input: AnyColor): Colordx => {\n  const mapped = toGamutSrgbRaw(input);\n  return mapped !== null ? Colordx._makeFromOklab(mapped) : new Colordx(input);\n};\n"]}
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{\n  ANGLE_UNITS,\n  NUM,\n  NUM_OR_NONE,\n  clamp,\n  hasKeys,\n  isAnyNumber,\n  isObject,\n  normalizeHue,\n  parseNum,\n  round,\n  sanitize,\n} from '../helpers.js';\nimport type { HslColor, RgbColor } from '../types.js';\n\nexport const clampHsl = (hsl: HslColor): HslColor => ({\n  h: normalizeHue(hsl.h),\n  s: clamp(hsl.s, 0, 100),\n  l: clamp(hsl.l, 0, 100),\n  alpha: clamp(round(hsl.alpha, 3), 0, 1),\n});\n\n// Shared write buffer for rgbToHslRaw — callers must destructure immediately, never store the reference.\nconst _hslBuf: HslColor = { h: 0, s: 0, l: 0, alpha: 0 };\n\nexport const rgbToHslRaw = ({ r, g, b, alpha }: RgbColor): HslColor => {\n  const rn = r / 255,\n    gn = g / 255,\n    bn = b / 255;\n  const max = Math.max(rn, gn, bn),\n    min = Math.min(rn, gn, bn);\n  const l = (max + min) / 2;\n  let h = 0,\n    s = 0;\n\n  if (max !== min) {\n    const d = max - min;\n    s = l > 0.5 ? d / (2 - max - min) : d / (max + min);\n    switch (max) {\n      case rn:\n        h = ((gn - bn) / d + (gn < bn ? 6 : 0)) / 6;\n        break;\n      case gn:\n        h = ((bn - rn) / d + 2) / 6;\n        break;\n      case bn:\n        h = ((rn - gn) / d + 4) / 6;\n        break;\n    }\n  }\n\n  const hDeg = h * 360;\n  _hslBuf.h = hDeg >= 0 && hDeg < 360 ? hDeg : ((hDeg % 360) + 360) % 360;\n  _hslBuf.s = clamp(s * 100, 0, 100);\n  _hslBuf.l = clamp(l * 100, 0, 100);\n  _hslBuf.alpha = clamp(round(alpha, 3), 0, 1);\n  return _hslBuf;\n};\n\nexport const rgbToHsl = (rgb: RgbColor): HslColor => {\n  const { h, s, l, alpha } = rgbToHslRaw(rgb);\n  const hr = round(h, 2);\n  // round() can push a value just below 360 to 360.00 due to floating-point; clamp back to 0.\n  return { h: hr >= 360 ? 0 : hr, s: round(s, 2), l: round(l, 2), alpha };\n};\n\nconst _hueToRgb = (p: number, q: number, t: number): number => {\n  if (t < 0) t += 1;\n  if (t > 1) t -= 1;\n  if (t < 1 / 6) return p + (q - p) * 6 * t;\n  if (t < 1 / 2) return q;\n  if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;\n  return p;\n};\n\nexport const hslToRgb = ({ h, s, l, alpha }: HslColor): RgbColor => {\n  const sn = s / 100,\n    ln = l / 100;\n  const q = ln < 0.5 ? ln * (1 + sn) : ln + sn - ln * sn;\n  const p = 2 * ln - q;\n  const hue = (((h % 360) + 360) % 360) / 360;\n  return {\n    r: _hueToRgb(p, q, hue + 1 / 3) * 255,\n    g: _hueToRgb(p, q, hue) * 255,\n    b: _hueToRgb(p, q, hue - 1 / 3) * 255,\n    alpha,\n  };\n};\n\nexport const parseHslObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if (!hasKeys(input, ['h', 's', 'l'])) return null;\n  const { h, s, l, alpha = 1 } = input as { h: unknown; s: unknown; l: unknown; alpha?: unknown };\n  if (!isAnyNumber(h) || !isAnyNumber(s) || !isAnyNumber(l) || !isAnyNumber(alpha)) return null;\n  return hslToRgb(clampHsl({ h: sanitize(h), s: sanitize(s), l: sanitize(l), alpha: sanitize(alpha) }));\n};\n\n// Legacy comma form requires `%` on s/l and disallows `none`. Modern space form\n// allows optional `%` and the CSS Color 4 `none` keyword on any channel.\n// Named groups: `_c` = comma/legacy branch, `_s` = space/modern branch.\nconst HSL_RE = new RegExp(\n  `^hsla?\\\\(\\\\s*(?<h>${NUM_OR_NONE})(?<hu>deg|rad|grad|turn)?\\\\s*(?:` +\n    `,\\\\s*(?<s_c>${NUM})%\\\\s*,\\\\s*(?<l_c>${NUM})%` +\n    `(?:\\\\s*,\\\\s*(?<al_c>${NUM})(?<alp_c>%?)?\\\\s*)?` +\n    `|` +\n    `\\\\s+(?<s_s>${NUM_OR_NONE})(?<sp_s>%?)\\\\s+(?<l_s>${NUM_OR_NONE})(?<lp_s>%?)` +\n    `(?:\\\\s*/\\\\s*(?<al_s>${NUM_OR_NONE})(?<alp_s>%?)?\\\\s*)?` +\n    `)\\\\)$`,\n  'i'\n);\n\nexport const parseHslString = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = HSL_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const isComma = g.s_c !== undefined;\n  if (isComma && /^none$/i.test(g.h!)) return null; // legacy syntax has no `none`\n  const unit = g.hu?.toLowerCase() ?? 'deg';\n  const h = parseNum(g.h!) * (ANGLE_UNITS[unit] ?? 1);\n  const s = parseNum((g.s_c ?? g.s_s)!);\n  const l = parseNum((g.l_c ?? g.l_s)!);\n  const rawA = g.al_c ?? g.al_s;\n  const isPercent = !!(g.alp_c ?? g.alp_s);\n  if (isComma && rawA !== undefined && /^none$/i.test(rawA)) return null;\n  const alpha = rawA === undefined ? 1 : parseNum(rawA) / (isPercent ? 100 : 1);\n  return hslToRgb(clampHsl({ h, s, l, alpha }));\n};\n","import {\n  ANGLE_UNITS,\n  NUM_OR_NONE,\n  clamp,\n  hasKeys,\n  isAnyNumber,\n  isObject,\n  normalizeHue,\n  parseNum,\n  sanitize,\n} from '../helpers.js';\nimport type { OklabColor, OklchColor, RgbColor } from '../types.js';\nimport { oklabToRgb, oklabToRgbUnclamped, rgbToOklab } from './oklab.js';\n\nconst oklchToOklab = ({ l, c, h, alpha }: OklchColor): OklabColor => ({\n  l,\n  a: c * Math.cos((h * Math.PI) / 180),\n  b: c * Math.sin((h * Math.PI) / 180),\n  alpha,\n});\n\nexport const rgbToOklch = (rgb: RgbColor): OklchColor => {\n  const { l: ol, a: oa, b: ob, alpha } = rgbToOklab(rgb);\n  const C = Math.sqrt(oa * oa + ob * ob);\n  const H = (Math.atan2(ob, oa) * 180) / Math.PI;\n  // Achromatic threshold on OKLCH scale (0–~0.4): proportionally equivalent to LCH's 0.0015 threshold.\n  return { l: ol, c: C, h: C < 0.000004 ? 0 : normalizeHue(H), alpha };\n};\n\nexport const oklchToRgb = (oklch: OklchColor): RgbColor => oklabToRgb(oklchToOklab(oklch));\nconst oklchToRgbUnclamped = (oklch: OklchColor): RgbColor => oklabToRgbUnclamped(oklchToOklab(oklch));\n\nexport const parseOklchObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  // Objects with colorSpace: 'lch' are CIE LCH, not OKLCH — let parseLchObject handle them.\n  if ((input as { colorSpace?: unknown }).colorSpace === 'lch') return null;\n  if (!hasKeys(input, ['l', 'c', 'h'])) return null;\n  const { l, c, h, alpha = 1 } = input as { l: unknown; c: unknown; h: unknown; alpha?: unknown };\n  if (!isAnyNumber(l) || !isAnyNumber(c) || !isAnyNumber(h) || !isAnyNumber(alpha)) return null;\n  if (sanitize(l) > 1) return null; // OKLCH L is always [0, 1]; reject CIE LCH values passed without colorSpace branding\n  return oklchToRgbUnclamped({\n    l: sanitize(l),\n    c: Math.max(0, sanitize(c)),\n    h: normalizeHue(sanitize(h)),\n    alpha: clamp(sanitize(alpha), 0, 1),\n  });\n};\n\nconst OKLCH_RE = new RegExp(\n  `^oklch\\\\(\\\\s*(?<l>${NUM_OR_NONE})(?<lp>%?)\\\\s+(?<c>${NUM_OR_NONE})(?<cp>%?)` +\n    `\\\\s+(?<h>${NUM_OR_NONE})(?<hu>deg|rad|grad|turn)?` +\n    `\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseOklchString = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = OKLCH_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const L = g.lp ? parseNum(g.l!) / 100 : parseNum(g.l!); // 100% = 1\n  const C = Math.max(0, g.cp ? parseNum(g.c!) * 0.004 : parseNum(g.c!)); // 100% = 0.4\n  const unit = g.hu?.toLowerCase() ?? 'deg';\n  const H = parseNum(g.h!) * (ANGLE_UNITS[unit] ?? 1);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return oklchToRgbUnclamped({\n    l: L,\n    c: C,\n    h: normalizeHue(H),\n    alpha: clamp(alpha, 0, 1),\n  });\n};\n","import { parseHex } from './colorModels/hex.js';\nimport { parseHslObject, parseHslString } from './colorModels/hsl.js';\nimport { parseOklabObject, parseOklabString } from './colorModels/oklab.js';\nimport { parseOklchObject, parseOklchString } from './colorModels/oklch.js';\nimport { parseRgbObject, parseRgbString } from './colorModels/rgb.js';\nimport type { AnyColor, ColorFormat, ColorParser, RgbColor } from './types.js';\n\nconst stringFormatParsers: [ColorParser, ColorFormat][] = [\n  [parseHex, 'hex'],\n  [parseRgbString, 'rgb'],\n  [parseHslString, 'hsl'],\n  [parseOklchString, 'oklch'],\n  [parseOklabString, 'oklab'],\n];\n\nconst objectFormatParsers: [ColorParser, ColorFormat][] = [\n  [parseRgbObject, 'rgb'],\n  [parseHslObject, 'hsl'],\n  [parseOklabObject, 'oklab'],\n  [parseOklchObject, 'oklch'],\n];\n\nconst builtinStringParsers: ColorParser[] = stringFormatParsers.map(([p]) => p);\nconst builtinObjectParsers: ColorParser[] = objectFormatParsers.map(([p]) => p);\n\nexport const defaultParsers: ColorParser[] = [...builtinStringParsers, ...builtinObjectParsers];\nexport const parsers: ColorParser[] = [...defaultParsers];\nexport const pluginFormatParsers: [ColorParser, ColorFormat][] = [];\n\nexport const parse = (input: AnyColor): RgbColor | null => {\n  if (input === 'transparent') return { r: 0, g: 0, b: 0, alpha: 0 };\n  const builtins = typeof input === 'string' ? builtinStringParsers : builtinObjectParsers;\n  for (const parser of builtins) {\n    const result = parser(input);\n    if (result) return result;\n  }\n  for (let i = defaultParsers.length; i < parsers.length; i++) {\n    const result = parsers[i]!(input);\n    if (result) return result;\n  }\n  return null;\n};\n\nexport const getFormat = (input: AnyColor): ColorFormat | undefined => {\n  if (input === 'transparent') return 'name';\n  const typed = typeof input === 'string' ? stringFormatParsers : objectFormatParsers;\n  for (const [parser, format] of typed) {\n    if (parser(input)) return format;\n  }\n  for (const [parser, format] of pluginFormatParsers) {\n    if (parser(input)) return format;\n  }\n  return undefined;\n};\n","import { rgbToHex, rgbToHex8 } from './colorModels/hex.js';\nimport { hslToRgb, rgbToHslRaw } from './colorModels/hsl.js';\nimport { linearSrgbToOklab, oklabToLinear, rgbToOklab } from './colorModels/oklab.js';\nimport { oklchToRgb, rgbToOklch } from './colorModels/oklch.js';\nimport { toGamutSrgbRaw } from './gamut.js';\nimport { clamp, round } from './helpers.js';\nimport { parse, parsers, pluginFormatParsers } from './parse.js';\nimport { srgbFromLinear, srgbToLinear } from './transfer.js';\nimport type { AnyColor, ColorFormat, ColorParser, HslColor, OklabColor, OklchColor, RgbColor } from './types.js';\n\nconst _SENTINEL: unique symbol = Symbol();\n\nexport class Colordx {\n  private readonly _rgb: RgbColor;\n  private readonly _valid: boolean;\n\n  constructor(input: AnyColor | Colordx | typeof _SENTINEL, _direct?: RgbColor) {\n    if (input === _SENTINEL) {\n      this._valid = true;\n      this._rgb = _direct!;\n    } else if (input instanceof Colordx) {\n      this._valid = input._valid;\n      this._rgb = input._rgb;\n      return;\n    } else {\n      const parsed = parse(input);\n      this._valid = parsed !== null;\n      this._rgb = parsed ?? { r: 0, g: 0, b: 0, alpha: 1 };\n    }\n    // Single chokepoint for alpha precision: parsers and _make() callers may hand us\n    // raw floats (e.g. 1/255, 0.1+0.2). Snapping here keeps every formatter consistent.\n    this._rgb.alpha = clamp(round(this._rgb.alpha, 3), 0, 1);\n  }\n\n  private static _make(rgb: RgbColor): Colordx {\n    return new Colordx(_SENTINEL, rgb);\n  }\n\n  /**\n   * Construct a Colordx from OKLab values, storing unclamped gamma-encoded sRGB internally.\n   * Unlike new Colordx(oklabObject), this does NOT clamp channels to [0, 1] before gamma encoding,\n   * so wide-gamut P3/Rec2020 colors are preserved accurately for toP3() / toRec2020() output.\n   * sRGB output methods (toRgb, toHex, etc.) clamp to [0, 255] before returning.\n   */\n  static _makeFromOklab({ l, a, b, alpha }: OklabColor): Colordx {\n    const [lr, lg, lb] = oklabToLinear(l, a, b);\n    return Colordx._make({\n      r: srgbFromLinear(lr) * 255,\n      g: srgbFromLinear(lg) * 255,\n      b: srgbFromLinear(lb) * 255,\n      alpha,\n    });\n  }\n\n  isValid(): boolean {\n    return this._valid;\n  }\n\n  toRgb(): RgbColor {\n    const { r, g, b, alpha } = this._rgb;\n    return { r: clamp(round(r), 0, 255), g: clamp(round(g), 0, 255), b: clamp(round(b), 0, 255), alpha };\n  }\n\n  /** Returns the internal unrounded RGB. Intended for plugin use where deferred rounding matters. */\n  _rawRgb(): RgbColor {\n    return this._rgb;\n  }\n\n  /**\n   * Format as a `rgb()` / `rgba()` CSS string.\n   * Default is CSS Color 4 modern syntax (space-separated, slash-delimited alpha):\n   *   `rgb(255 0 0)` / `rgb(255 0 0 / 0.5)`\n   * Pass `{ legacy: true }` for CSS Color 3 comma-separated syntax, which also\n   * switches the function name to `rgba()` when alpha < 1:\n   *   `rgb(255, 0, 0)` / `rgba(255, 0, 0, 0.5)`\n   */\n  toRgbString(options?: { legacy?: boolean }): string {\n    const { r, g, b, alpha } = this._rgb;\n    const ri = clamp(round(r), 0, 255),\n      gi = clamp(round(g), 0, 255),\n      bi = clamp(round(b), 0, 255);\n    if (options?.legacy) {\n      return alpha < 1 ? `rgba(${ri}, ${gi}, ${bi}, ${alpha})` : `rgb(${ri}, ${gi}, ${bi})`;\n    }\n    return alpha < 1 ? `rgb(${ri} ${gi} ${bi} / ${alpha})` : `rgb(${ri} ${gi} ${bi})`;\n  }\n\n  toHex(): string {\n    return rgbToHex(this._rgb);\n  }\n\n  /** Always returns an 8-digit `#rrggbbaa`, even when alpha is 1. */\n  toHex8(): string {\n    return rgbToHex8(this._rgb);\n  }\n\n  /** Returns a 24-bit RGB integer (0x000000–0xFFFFFF). Alpha is not included. */\n  toNumber(): number {\n    const { r, g, b } = this._rgb;\n    return (clamp(round(r), 0, 255) << 16) | (clamp(round(g), 0, 255) << 8) | clamp(round(b), 0, 255);\n  }\n\n  toHsl(precision = 2): HslColor {\n    const { h, s, l, alpha } = rgbToHslRaw(this._rgb);\n    const hr = round(h, precision);\n    return { h: hr >= 360 ? 0 : hr, s: round(s, precision), l: round(l, precision), alpha };\n  }\n\n  toHslString(precision = 2): string {\n    const { h, s, l, alpha } = this.toHsl(precision);\n    return alpha < 1 ? `hsl(${h} ${s}% ${l}% / ${alpha})` : `hsl(${h} ${s}% ${l}%)`;\n  }\n\n  toOklab(precision = 4): OklabColor {\n    const { l, a, b, alpha } = rgbToOklab(this._rgb);\n    return { l: round(l, precision), a: round(a, precision), b: round(b, precision), alpha };\n  }\n\n  toOklabString(precision = 4): string {\n    const { l, a, b, alpha } = this.toOklab(precision);\n    return alpha < 1 ? `oklab(${l} ${a} ${b} / ${alpha})` : `oklab(${l} ${a} ${b})`;\n  }\n\n  toOklch(precision = 4): OklchColor {\n    const { l, c, h, alpha } = rgbToOklch(this._rgb);\n    return { l: round(l, precision), c: round(c, precision), h: round(h, precision), alpha };\n  }\n\n  toOklchString(precision = 4): string {\n    const { l, c, h, alpha } = this.toOklch(precision);\n    const H = c === 0 ? 'none' : h;\n    return alpha < 1 ? `oklch(${l} ${c} ${H} / ${alpha})` : `oklch(${l} ${c} ${H})`;\n  }\n\n  brightness(): number {\n    const { r, g, b } = this._rgb;\n    return round((r * 299 + g * 587 + b * 114) / 255000, 2);\n  }\n\n  isDark(): boolean {\n    return this.brightness() < 0.5;\n  }\n\n  isLight(): boolean {\n    return this.brightness() >= 0.5;\n  }\n\n  alpha(): number;\n  alpha(value: number): Colordx;\n  alpha(value?: number): number | Colordx {\n    if (value === undefined) return this._rgb.alpha;\n    return Colordx._make({ ...this._rgb, alpha: round(clamp(value, 0, 1), 3) });\n  }\n\n  hue(): number;\n  hue(value: number): Colordx;\n  hue(value?: number): number | Colordx {\n    const { h, s, l, alpha } = rgbToHslRaw(this._rgb);\n    if (value === undefined) {\n      const hr = round(h, 2);\n      return hr >= 360 ? 0 : hr;\n    }\n    return Colordx._make(hslToRgb({ h: value, s, l, alpha }));\n  }\n\n  lightness(): number;\n  lightness(value: number): Colordx;\n  lightness(value?: number): number | Colordx {\n    const oklch = this.toOklch();\n    if (value === undefined) return oklch.l;\n    return Colordx._make(oklchToRgb({ ...oklch, l: clamp(value, 0, 1) }));\n  }\n\n  chroma(): number;\n  chroma(value: number): Colordx;\n  chroma(value?: number): number | Colordx {\n    const oklch = this.toOklch();\n    if (value === undefined) return oklch.c;\n    return Colordx._make(oklchToRgb({ ...oklch, c: clamp(value, 0, 0.4) }));\n  }\n\n  lighten(amount = 0.1, options?: { relative?: boolean }): Colordx {\n    const { h, s, l, alpha } = rgbToHslRaw(this._rgb);\n    const newL = options?.relative ? l * (1 + amount) : l + amount * 100;\n    return Colordx._make(hslToRgb({ h, s, l: clamp(newL, 0, 100), alpha }));\n  }\n\n  darken(amount = 0.1, options?: { relative?: boolean }): Colordx {\n    return this.lighten(-amount, options);\n  }\n\n  saturate(amount = 0.1, options?: { relative?: boolean }): Colordx {\n    const { h, s, l, alpha } = rgbToHslRaw(this._rgb);\n    const newS = options?.relative ? s * (1 + amount) : s + amount * 100;\n    return Colordx._make(hslToRgb({ h, s: clamp(newS, 0, 100), l, alpha }));\n  }\n\n  desaturate(amount = 0.1, options?: { relative?: boolean }): Colordx {\n    return this.saturate(-amount, options);\n  }\n\n  grayscale(): Colordx {\n    return this.desaturate(1);\n  }\n\n  invert(): Colordx {\n    const { r, g, b, alpha } = this._rgb;\n    return Colordx._make({ r: 255 - r, g: 255 - g, b: 255 - b, alpha });\n  }\n\n  rotate(amount = 15): Colordx {\n    return this.hue(this.hue() + amount);\n  }\n\n  isEqual(color: AnyColor): boolean {\n    const other = new Colordx(color).toRgb();\n    const self = this.toRgb();\n    return self.r === other.r && self.g === other.g && self.b === other.b && self.alpha === other.alpha;\n  }\n\n  toString(): string {\n    return this.toHex();\n  }\n\n  /**\n   * Clips this color into the sRGB gamut by clamping out-of-range channels to [0, 255].\n   * Matches the naive-clip strategy browsers use when rendering out-of-gamut `oklch()` / `oklab()`.\n   * Hue and lightness may shift noticeably for colors far outside sRGB.\n   * Returns `this` when already in gamut.\n   */\n  clampSrgb(): Colordx {\n    const { r, g, b, alpha } = this._rgb;\n    if (r >= 0 && r <= 255 && g >= 0 && g <= 255 && b >= 0 && b <= 255) return this;\n    return Colordx._make({\n      r: clamp(r, 0, 255),\n      g: clamp(g, 0, 255),\n      b: clamp(b, 0, 255),\n      alpha,\n    });\n  }\n\n  /**\n   * Maps this color into the sRGB gamut using the CSS Color 4 gamut mapping algorithm\n   * (chroma-reduction binary search). Preserves lightness and hue; sacrifices chroma.\n   * Useful when hue stability matters — design tokens, palettes, color pickers.\n   * Returns `this` when already in gamut.\n   */\n  mapSrgb(): Colordx {\n    const { r, g, b, alpha } = this._rgb;\n    if (r >= 0 && r <= 255 && g >= 0 && g <= 255 && b >= 0 && b <= 255) return this;\n    const [lRaw, a, bv] = linearSrgbToOklab(srgbToLinear(r / 255), srgbToLinear(g / 255), srgbToLinear(b / 255));\n    // The gamma-encoded round-trip drifts L by ~1e-9 at boundaries; snap so that inputs with\n    // exact L=0 or L=1 hit the same white/black shortcut the static gamut map uses.\n    const l = lRaw > 1 - 1e-7 ? 1 : lRaw < 1e-7 ? 0 : lRaw;\n    const mapped = toGamutSrgbRaw({ l, a, b: bv, alpha });\n    return mapped !== null ? Colordx._makeFromOklab(mapped) : this;\n  }\n\n  /**\n   * Maps an out-of-sRGB-gamut color into sRGB using the CSS Color 4 gamut mapping algorithm.\n   * Colors already in gamut are returned as-is. sRGB inputs (hex, rgb, hsl, etc.) are passed through.\n   */\n  static toGamutSrgb: (input: AnyColor) => Colordx;\n}\n\nexport type Plugin = (\n  ColordxClass: typeof Colordx,\n  parsers: ColorParser[],\n  formatParsers: [ColorParser, ColorFormat][]\n) => void;\n\nexport const colordx = (input: AnyColor | Colordx): Colordx => new Colordx(input);\n\n/** Emit an 8-digit `#rrggbbaa` hex for any color input. Convenience over `colordx(c).toHex8()`. */\nexport const toHex8 = (input: AnyColor | Colordx): string => new Colordx(input).toHex8();\n\nexport const extend = (plugins: Plugin[]): void => {\n  plugins.forEach((plugin) => plugin(Colordx, parsers, pluginFormatParsers));\n};\n\nexport const nearest = <T extends AnyColor>(color: AnyColor, candidates: T[]): T => {\n  if (candidates.length === 0) throw new Error('nearest: candidates array must not be empty');\n  const { l: l1, a: a1, b: b1 } = new Colordx(color).toOklab();\n  let minDist = Infinity;\n  let result = candidates[0] as T;\n  for (const candidate of candidates) {\n    const { l: l2, a: a2, b: b2 } = new Colordx(candidate).toOklab();\n    const dist = (l2 - l1) ** 2 + (a2 - a1) ** 2 + (b2 - b1) ** 2;\n    if (dist < minDist) {\n      minDist = dist;\n      result = candidate;\n    }\n  }\n  return result;\n};\n\nexport const random = (): Colordx =>\n  new Colordx({\n    r: Math.round(Math.random() * 255),\n    g: Math.round(Math.random() * 255),\n    b: Math.round(Math.random() * 255),\n    alpha: 1,\n  });\n\nColordx.toGamutSrgb = (input: AnyColor): Colordx => {\n  const mapped = toGamutSrgbRaw(input);\n  return mapped !== null ? Colordx._makeFromOklab(mapped) : new Colordx(input);\n};\n"]}

dist/plugins/lab.cjs

@@ -1,2 +0,2 @@
-'use strict';var chunkFZP4XDSG_cjs=require('../chunk-FZP4XDSG.cjs');require('../chunk-X5FCFNQN.cjs'),require('../chunk-3V4MONNR.cjs');var chunkYISEJCI6_cjs=require('../chunk-YISEJCI6.cjs');var d=(b,f,x)=>{b.prototype.toLab=function(t=2){let{l:a,a:r,b:n,alpha:o}=chunkFZP4XDSG_cjs.l(this._rawRgb());return {l:chunkYISEJCI6_cjs.b(a,t),a:chunkYISEJCI6_cjs.b(r,t)||0,b:chunkYISEJCI6_cjs.b(n,t)||0,alpha:o,colorSpace:"lab"}},b.prototype.toLabString=function(t=2){let{l:a,a:r,b:n,alpha:o}=this.toLab(t);return o<1?`lab(${a} ${r} ${n} / ${o})`:`lab(${a} ${r} ${n})`},b.prototype.toXyz=function(t=2){let{x:a,y:r,z:n,alpha:o}=chunkFZP4XDSG_cjs.b(this._rawRgb());return {x:chunkYISEJCI6_cjs.b(a,t),y:chunkYISEJCI6_cjs.b(r,t),z:chunkYISEJCI6_cjs.b(n,t),alpha:o}},b.prototype.toXyzString=function(t=2){let{x:a,y:r,z:n,alpha:o}=this.toXyz(t);return o<1?`color(xyz-d50 ${a} ${r} ${n} / ${o})`:`color(xyz-d50 ${a} ${r} ${n})`},b.prototype.toXyzD65=function(t=2){let{x:a,y:r,z:n,alpha:o}=chunkFZP4XDSG_cjs.a(this._rawRgb());return {x:chunkYISEJCI6_cjs.b(a,t),y:chunkYISEJCI6_cjs.b(r,t),z:chunkYISEJCI6_cjs.b(n,t),alpha:o,colorSpace:"xyz-d65"}},b.prototype.toXyzD65String=function(t=2){let{x:a,y:r,z:n,alpha:o}=this.toXyzD65(t);return o<1?`color(xyz-d65 ${a} ${r} ${n} / ${o})`:`color(xyz-d65 ${a} ${r} ${n})`},b.prototype.mixLab=function(t,a=.5){let r=chunkFZP4XDSG_cjs.l(this._rawRgb()),n=chunkFZP4XDSG_cjs.l(new b(t)._rawRgb()),o=chunkYISEJCI6_cjs.a(a,0,1);return new b(chunkFZP4XDSG_cjs.o({l:r.l*(1-o)+n.l*o,a:r.a*(1-o)+n.a*o,b:r.b*(1-o)+n.b*o,alpha:chunkYISEJCI6_cjs.b(r.alpha*(1-o)+n.alpha*o,3),colorSpace:"lab"}))},b.prototype.delta=function(t="#fff"){return chunkYISEJCI6_cjs.b(chunkFZP4XDSG_cjs.n(chunkFZP4XDSG_cjs.m(this._rawRgb()),chunkFZP4XDSG_cjs.m(new b(t)._rawRgb()))/100,3)},f.push(chunkFZP4XDSG_cjs.p,chunkFZP4XDSG_cjs.q,chunkFZP4XDSG_cjs.g,chunkFZP4XDSG_cjs.f,chunkFZP4XDSG_cjs.h,chunkFZP4XDSG_cjs.e),x.push([chunkFZP4XDSG_cjs.p,"lab"],[chunkFZP4XDSG_cjs.q,"lab"],[chunkFZP4XDSG_cjs.g,"xyz-d65"],[chunkFZP4XDSG_cjs.f,"xyz-d65"],[chunkFZP4XDSG_cjs.h,"xyz"],[chunkFZP4XDSG_cjs.e,"xyz"]);},w=d;module.exports=w;//# sourceMappingURL=lab.cjs.map
+'use strict';var chunkGU6TZJ4O_cjs=require('../chunk-GU6TZJ4O.cjs');require('../chunk-X5FCFNQN.cjs'),require('../chunk-3V4MONNR.cjs');var chunkYISEJCI6_cjs=require('../chunk-YISEJCI6.cjs');var d=(b,f,x)=>{b.prototype.toLab=function(t=2){let{l:a,a:r,b:n,alpha:o}=chunkGU6TZJ4O_cjs.m(this._rawRgb());return {l:chunkYISEJCI6_cjs.b(a,t),a:chunkYISEJCI6_cjs.b(r,t)||0,b:chunkYISEJCI6_cjs.b(n,t)||0,alpha:o,colorSpace:"lab"}},b.prototype.toLabString=function(t=2){let{l:a,a:r,b:n,alpha:o}=this.toLab(t);return o<1?`lab(${a} ${r} ${n} / ${o})`:`lab(${a} ${r} ${n})`},b.prototype.toXyz=function(t=2){let{x:a,y:r,z:n,alpha:o}=chunkGU6TZJ4O_cjs.c(this._rawRgb());return {x:chunkYISEJCI6_cjs.b(a,t),y:chunkYISEJCI6_cjs.b(r,t),z:chunkYISEJCI6_cjs.b(n,t),alpha:o}},b.prototype.toXyzString=function(t=2){let{x:a,y:r,z:n,alpha:o}=this.toXyz(t);return o<1?`color(xyz-d50 ${a} ${r} ${n} / ${o})`:`color(xyz-d50 ${a} ${r} ${n})`},b.prototype.toXyzD65=function(t=2){let{x:a,y:r,z:n,alpha:o}=chunkGU6TZJ4O_cjs.a(this._rawRgb());return {x:chunkYISEJCI6_cjs.b(a,t),y:chunkYISEJCI6_cjs.b(r,t),z:chunkYISEJCI6_cjs.b(n,t),alpha:o,colorSpace:"xyz-d65"}},b.prototype.toXyzD65String=function(t=2){let{x:a,y:r,z:n,alpha:o}=this.toXyzD65(t);return o<1?`color(xyz-d65 ${a} ${r} ${n} / ${o})`:`color(xyz-d65 ${a} ${r} ${n})`},b.prototype.mixLab=function(t,a=.5){let r=chunkGU6TZJ4O_cjs.m(this._rawRgb()),n=chunkGU6TZJ4O_cjs.m(new b(t)._rawRgb()),o=chunkYISEJCI6_cjs.a(a,0,1);return new b(chunkGU6TZJ4O_cjs.p({l:r.l*(1-o)+n.l*o,a:r.a*(1-o)+n.a*o,b:r.b*(1-o)+n.b*o,alpha:chunkYISEJCI6_cjs.b(r.alpha*(1-o)+n.alpha*o,3),colorSpace:"lab"}))},b.prototype.delta=function(t="#fff"){return chunkYISEJCI6_cjs.b(chunkGU6TZJ4O_cjs.o(chunkGU6TZJ4O_cjs.n(this._rawRgb()),chunkGU6TZJ4O_cjs.n(new b(t)._rawRgb()))/100,3)},f.push(chunkGU6TZJ4O_cjs.r,chunkGU6TZJ4O_cjs.s,chunkGU6TZJ4O_cjs.h,chunkGU6TZJ4O_cjs.g,chunkGU6TZJ4O_cjs.i,chunkGU6TZJ4O_cjs.f),x.push([chunkGU6TZJ4O_cjs.r,"lab"],[chunkGU6TZJ4O_cjs.s,"lab"],[chunkGU6TZJ4O_cjs.h,"xyz-d65"],[chunkGU6TZJ4O_cjs.g,"xyz-d65"],[chunkGU6TZJ4O_cjs.i,"xyz"],[chunkGU6TZJ4O_cjs.f,"xyz"]);},w=d;module.exports=w;//# sourceMappingURL=lab.cjs.map
 //# sourceMappingURL=lab.cjs.map

dist/plugins/lab.mjs

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+import {m,c,a,p,o,n,r,s,h,g,i,f}from'../chunk-4LKLL3IS.mjs';import'../chunk-FXCFKFXK.mjs';import'../chunk-Q3O3QQ4H.mjs';import {b,a as a$1}from'../chunk-IOXRZECH.mjs';var d=(b$1,f$1,x)=>{b$1.prototype.toLab=function(t=2){let{l:a,a:r,b:n,alpha:o}=m(this._rawRgb());return {l:b(a,t),a:b(r,t)||0,b:b(n,t)||0,alpha:o,colorSpace:"lab"}},b$1.prototype.toLabString=function(t=2){let{l:a,a:r,b:n,alpha:o}=this.toLab(t);return o<1?`lab(${a} ${r} ${n} / ${o})`:`lab(${a} ${r} ${n})`},b$1.prototype.toXyz=function(t=2){let{x:a,y:r,z:n,alpha:o}=c(this._rawRgb());return {x:b(a,t),y:b(r,t),z:b(n,t),alpha:o}},b$1.prototype.toXyzString=function(t=2){let{x:a,y:r,z:n,alpha:o}=this.toXyz(t);return o<1?`color(xyz-d50 ${a} ${r} ${n} / ${o})`:`color(xyz-d50 ${a} ${r} ${n})`},b$1.prototype.toXyzD65=function(t=2){let{x:a$1,y:r,z:n,alpha:o}=a(this._rawRgb());return {x:b(a$1,t),y:b(r,t),z:b(n,t),alpha:o,colorSpace:"xyz-d65"}},b$1.prototype.toXyzD65String=function(t=2){let{x:a,y:r,z:n,alpha:o}=this.toXyzD65(t);return o<1?`color(xyz-d65 ${a} ${r} ${n} / ${o})`:`color(xyz-d65 ${a} ${r} ${n})`},b$1.prototype.mixLab=function(t,a=.5){let r=m(this._rawRgb()),n=m(new b$1(t)._rawRgb()),o=a$1(a,0,1);return new b$1(p({l:r.l*(1-o)+n.l*o,a:r.a*(1-o)+n.a*o,b:r.b*(1-o)+n.b*o,alpha:b(r.alpha*(1-o)+n.alpha*o,3),colorSpace:"lab"}))},b$1.prototype.delta=function(t="#fff"){return b(o(n(this._rawRgb()),n(new b$1(t)._rawRgb()))/100,3)},f$1.push(r,s,h,g,i,f),x.push([r,"lab"],[s,"lab"],[h,"xyz-d65"],[g,"xyz-d65"],[i,"xyz"],[f,"xyz"]);},w=d;export{w as default};//# sourceMappingURL=lab.mjs.map
 //# sourceMappingURL=lab.mjs.map

dist/plugins/lab.mjs.map

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{ deltaE2000, labToRgb, parseLabObject, parseLabString, rgbToLab, rgbToLabD65 } from '../colorModels/lab.js';\nimport {\n  parseXyzD50String,\n  parseXyzD65Object,\n  parseXyzD65String,\n  parseXyzObject,\n  rgbToXyz,\n  rgbToXyzD65,\n} from '../colorModels/xyz.js';\nimport type { Colordx, Plugin } from '../colordx.js';\nimport { clamp, round } from '../helpers.js';\nimport type { AnyColor, LabColor, XyzColor, XyzD65Color } from '../types.js';\n\ndeclare module '@colordx/core' {\n  interface Colordx {\n    toLab(precision?: number): LabColor;\n    toLabString(precision?: number): string;\n    toXyz(precision?: number): XyzColor;\n    toXyzString(precision?: number): string;\n    toXyzD65(precision?: number): XyzD65Color;\n    toXyzD65String(precision?: number): string;\n    mixLab(color: AnyColor, ratio?: number): Colordx;\n    delta(color?: AnyColor): number;\n  }\n}\n\nconst lab: Plugin = (ColordxClass, parsers, formatParsers) => {\n  ColordxClass.prototype.toLab = function (precision = 2) {\n    const { l, a, b, alpha } = rgbToLab(this._rawRgb());\n    return {\n      l: round(l, precision),\n      a: round(a, precision) || 0, // || 0 suppresses −0\n      b: round(b, precision) || 0,\n      alpha,\n      colorSpace: 'lab' as const,\n    };\n  };\n  ColordxClass.prototype.toLabString = function (this: Colordx, precision = 2) {\n    const { l, a, b, alpha } = this.toLab(precision);\n    return alpha < 1 ? `lab(${l} ${a} ${b} / ${alpha})` : `lab(${l} ${a} ${b})`;\n  };\n  ColordxClass.prototype.toXyz = function (precision = 2) {\n    const { x, y, z, alpha } = rgbToXyz(this._rawRgb());\n    return { x: round(x, precision), y: round(y, precision), z: round(z, precision), alpha };\n  };\n  ColordxClass.prototype.toXyzString = function (this: Colordx, precision = 2) {\n    const { x, y, z, alpha } = this.toXyz(precision);\n    return alpha < 1 ? `color(xyz-d50 ${x} ${y} ${z} / ${alpha})` : `color(xyz-d50 ${x} ${y} ${z})`;\n  };\n  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* (1 - w) + lab2.alpha * w, 3),\n        colorSpace: 'lab',\n      })\n    );\n  };\n  /** Returns ΔE2000 color difference normalized to [0, 1] (divide by 100). 0 = identical, 1 = maximally different. */\n  ColordxClass.prototype.delta = function (color: AnyColor = '#fff') {\n    return round(deltaE2000(rgbToLabD65(this._rawRgb()), rgbToLabD65(new ColordxClass(color)._rawRgb())) / 100, 3);\n  };\n  parsers.push(parseLabString, parseLabObject, parseXyzD65String, parseXyzD65Object, parseXyzD50String, parseXyzObject);\n  formatParsers.push(\n    [parseLabString, 'lab'],\n    [parseLabObject, 'lab'],\n    [parseXyzD65String, 'xyz-d65'],\n    [parseXyzD65Object, 'xyz-d65'],\n    [parseXyzD50String, 'xyz'],\n    [parseXyzObject, 'xyz']\n  );\n};\n\nexport default lab;\n"]}

dist/plugins/lch.cjs

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 //# sourceMappingURL=lch.cjs.map

dist/plugins/lch.cjs.map

@@ -1,1 +0,1 @@
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0 : h < 0 ? h + 360 : h,\n    alpha: lab.alpha,\n    colorSpace: 'lch',\n  };\n};\n\nexport const rgbToLch = (rgb: RgbColor): LchColor => {\n  const { l, c, h, alpha } = rgbToLchRaw(rgb);\n  const cR = round(c, 2);\n  return { l, c: cR, h: cR < 0.0015 ? 0 : round(h, 2), alpha, colorSpace: 'lch' };\n};\n\nexport const lchToRgb = ({ l, c, h, alpha }: LchColor): RgbColor =>\n  labToRgb({\n    l,\n    a: c * Math.cos((h * Math.PI) / 180),\n    b: c * Math.sin((h * Math.PI) / 180),\n    alpha,\n    colorSpace: 'lab',\n  });\n\nexport const parseLchObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'lch') return null;\n  if (!hasKeys(input, ['l', 'c', 'h'])) return null;\n  const { l, c, h, alpha = 1 } = input as { l: unknown; c: unknown; h: unknown; alpha?: unknown };\n  if (!isAnyNumber(l) || !isAnyNumber(c) || !isAnyNumber(h) || !isAnyNumber(alpha)) return null;\n  return lchToRgb(\n    clampLch({\n      l: sanitize(l),\n      c: sanitize(c),\n      h: sanitize(h),\n      alpha: sanitize(alpha),\n    })\n  );\n};\n\n// CSS Color 4: lch(L C H / alpha). L: 100%=100. C: 100%=150. H: number|angle|none.\nconst LCH_RE = new RegExp(\n  `^lch\\\\(\\\\s*(?<l>${NUM_OR_NONE})(?<lp>%?)\\\\s+(?<c>${NUM_OR_NONE})(?<cp>%?)` +\n    `\\\\s+(?<h>${NUM_OR_NONE})(?<hu>deg|rad|grad|turn)?` +\n    `\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseLchString = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = LCH_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const l = parseNum(g.l!); // 100% = 100\n  const c = g.cp ? parseNum(g.c!) * 1.5 : parseNum(g.c!); // 100% = 150\n  const unit = g.hu?.toLowerCase() ?? 'deg';\n  const h = parseNum(g.h!) * (ANGLE_UNITS[unit] ?? 1);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return lchToRgb(clampLch({ l, c, h, alpha }));\n};\n","import { parseLchObject, parseLchString, rgbToLchRaw } from '../colorModels/lch.js';\nimport type { Plugin } from '../colordx.js';\nimport { round } from '../helpers.js';\nimport type { LchColor } from '../types.js';\n\ndeclare module '@colordx/core' {\n  interface Colordx {\n    toLch(precision?: number): LchColor;\n    toLchString(precision?: number): string;\n  }\n}\n\nconst lch: Plugin = (ColordxClass, parsers, formatParsers) => {\n  ColordxClass.prototype.toLch = function (precision = 2) {\n    const { l, c, h, alpha } = rgbToLchRaw(this._rawRgb());\n    const cR = round(c, precision);\n    return {\n      l: round(l, precision),\n      c: cR,\n      // Achromatic threshold on LCH scale (0–~150): below this chroma the hue is numerically unstable.\n      h: c < 0.0015 ? 0 : round(h, precision),\n      alpha,\n      colorSpace: 'lch' as const,\n    };\n  };\n  ColordxClass.prototype.toLchString = function (precision = 2) {\n    const { l, c, h, alpha } = this.toLch(precision);\n    const H = c === 0 ? 'none' : h;\n    return alpha < 1 ? `lch(${l} ${c} ${H} / ${alpha})` : `lch(${l} ${c} ${H})`;\n  };\n  parsers.push(parseLchObject, parseLchString);\n  formatParsers.push([parseLchObject, 'lch'], [parseLchString, 'lch']);\n};\n\nexport default lch;\n"]}
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{\n  ANGLE_UNITS,\n  NUM_OR_NONE,\n  clamp,\n  hasKeys,\n  isAnyNumber,\n  isObject,\n  normalizeHue,\n  parseNum,\n  round,\n  sanitize,\n} from '../helpers.js';\nimport type { LchColor, RgbColor } from '../types.js';\nimport { labToRgb, labToRgbUnclamped, rgbToLab } from './lab.js';\n\nconst clampLch = (lch: Omit<LchColor, 'colorSpace'>): LchColor => ({\n  l: clamp(lch.l, 0, 100),\n  c: Math.max(0, lch.c),\n  h: normalizeHue(lch.h),\n  alpha: clamp(lch.alpha, 0, 1),\n  colorSpace: 'lch',\n});\n\nexport const rgbToLchRaw = (rgb: RgbColor): LchColor => {\n  const lab = rgbToLab(rgb);\n  const c = Math.sqrt(lab.a ** 2 + lab.b ** 2);\n  const h = (Math.atan2(lab.b, lab.a) / Math.PI) * 180;\n  return {\n    l: lab.l,\n    c,\n    // Achromatic threshold on LCH scale (0–~150): below this chroma the hue is numerically unstable.\n    h: c < 0.0015 ? 0 : h < 0 ? h + 360 : h,\n    alpha: lab.alpha,\n    colorSpace: 'lch',\n  };\n};\n\nexport const rgbToLch = (rgb: RgbColor): LchColor => {\n  const { l, c, h, alpha } = rgbToLchRaw(rgb);\n  const cR = round(c, 2);\n  return { l, c: cR, h: cR < 0.0015 ? 0 : round(h, 2), alpha, colorSpace: 'lch' };\n};\n\nexport const lchToRgb = ({ l, c, h, alpha }: LchColor): RgbColor =>\n  labToRgb({\n    l,\n    a: c * Math.cos((h * Math.PI) / 180),\n    b: c * Math.sin((h * Math.PI) / 180),\n    alpha,\n    colorSpace: 'lab',\n  });\n\n/** Unclamped LCH → gamma sRGB. Mirrors lchToRgb but preserves out-of-gamut channels. */\nconst lchToRgbUnclamped = ({ l, c, h, alpha }: LchColor): RgbColor =>\n  labToRgbUnclamped({\n    l,\n    a: c * Math.cos((h * Math.PI) / 180),\n    b: c * Math.sin((h * Math.PI) / 180),\n    alpha,\n    colorSpace: 'lab',\n  });\n\nexport const parseLchObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'lch') return null;\n  if (!hasKeys(input, ['l', 'c', 'h'])) return null;\n  const { l, c, h, alpha = 1 } = input as { l: unknown; c: unknown; h: unknown; alpha?: unknown };\n  if (!isAnyNumber(l) || !isAnyNumber(c) || !isAnyNumber(h) || !isAnyNumber(alpha)) return null;\n  return lchToRgbUnclamped(\n    clampLch({\n      l: sanitize(l),\n      c: sanitize(c),\n      h: sanitize(h),\n      alpha: sanitize(alpha),\n    })\n  );\n};\n\n// CSS Color 4: lch(L C H / alpha). L: 100%=100. C: 100%=150. H: number|angle|none.\nconst LCH_RE = new RegExp(\n  `^lch\\\\(\\\\s*(?<l>${NUM_OR_NONE})(?<lp>%?)\\\\s+(?<c>${NUM_OR_NONE})(?<cp>%?)` +\n    `\\\\s+(?<h>${NUM_OR_NONE})(?<hu>deg|rad|grad|turn)?` +\n    `\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseLchString = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = LCH_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const l = parseNum(g.l!); // 100% = 100\n  const c = g.cp ? parseNum(g.c!) * 1.5 : parseNum(g.c!); // 100% = 150\n  const unit = g.hu?.toLowerCase() ?? 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'none' : h;\n    return alpha < 1 ? `lch(${l} ${c} ${H} / ${alpha})` : `lch(${l} ${c} ${H})`;\n  };\n  parsers.push(parseLchObject, parseLchString);\n  formatParsers.push([parseLchObject, 'lch'], [parseLchString, 'lch']);\n};\n\nexport default lch;\n"]}

dist/plugins/lch.mjs

@@ -1,2 +0,2 @@
-import {l,o}from'../chunk-MOYQ3PQJ.mjs';import'../chunk-FXCFKFXK.mjs';import'../chunk-Q3O3QQ4H.mjs';import {b,h,i,f,g,l as l$1,d,a,c,k as k$1}from'../chunk-IOXRZECH.mjs';var $=c$1=>({l:a(c$1.l,0,100),c:Math.max(0,c$1.c),h:c(c$1.h),alpha:a(c$1.alpha,0,1),colorSpace:"lch"}),x=c=>{let o=l(c),t=Math.sqrt(o.a**2+o.b**2),r=Math.atan2(o.b,o.a)/Math.PI*180;return {l:o.l,c:t,h:t<.0015?0:r<0?r+360:r,alpha:o.alpha,colorSpace:"lch"}};var y=({l:c,c:o$1,h:t,alpha:r})=>o({l:c,a:o$1*Math.cos(t*Math.PI/180),b:o$1*Math.sin(t*Math.PI/180),alpha:r,colorSpace:"lab"}),m=c=>{if(!h(c)||c.colorSpace!=="lch"||!i(c,["l","c","h"]))return null;let{l:o,c:t,h:r,alpha:l=1}=c;return !f(o)||!f(t)||!f(r)||!f(l)?null:y($({l:g(o),c:g(t),h:g(r),alpha:g(l)}))},M=new RegExp(`^lch\\(\\s*(?<l>${k$1})(?<lp>%?)\\s+(?<c>${k$1})(?<cp>%?)\\s+(?<h>${k$1})(?<hu>deg|rad|grad|turn)?\\s*(?:/\\s*(?<al>${k$1})(?<alp>%?)\\s*)?\\)$`,"i"),L=c=>{if(typeof c!="string")return null;let o=M.exec(c.trim())?.groups;if(!o)return null;let t=l$1(o.l),r=o.cp?l$1(o.c)*1.5:l$1(o.c),l=o.hu?.toLowerCase()??"deg",n=l$1(o.h)*(d[l]??1),h=o.al===void 0?1:l$1(o.al)/(o.alp?100:1);return y($({l:t,c:r,h:n,alpha:h}))};var k=(c,o,t)=>{c.prototype.toLch=function(r=2){let{l,c:n,h,alpha:i}=x(this._rawRgb()),g=b(n,r);return {l:b(l,r),c:g,h:n<.0015?0:b(h,r),alpha:i,colorSpace:"lch"}},c.prototype.toLchString=function(r=2){let{l,c:n,h,alpha:i}=this.toLch(r),g=n===0?"none":h;return i<1?`lch(${l} ${n} ${g} / ${i})`:`lch(${l} ${n} ${g})`},o.push(m,L),t.push([m,"lch"],[L,"lch"]);},_=k;export{_ as default};//# sourceMappingURL=lch.mjs.map
+import {m as m$1,q}from'../chunk-4LKLL3IS.mjs';import'../chunk-FXCFKFXK.mjs';import'../chunk-Q3O3QQ4H.mjs';import {b,h,i,f,g,l,d,a,c,k}from'../chunk-IOXRZECH.mjs';var w=c$1=>({l:a(c$1.l,0,100),c:Math.max(0,c$1.c),h:c(c$1.h),alpha:a(c$1.alpha,0,1),colorSpace:"lch"}),$=c=>{let o=m$1(c),l=Math.sqrt(o.a**2+o.b**2),r=Math.atan2(o.b,o.a)/Math.PI*180;return {l:o.l,c:l,h:l<.0015?0:r<0?r+360:r,alpha:o.alpha,colorSpace:"lch"}};var x=({l:c,c:o,h:l,alpha:r})=>q({l:c,a:o*Math.cos(l*Math.PI/180),b:o*Math.sin(l*Math.PI/180),alpha:r,colorSpace:"lab"}),m=c=>{if(!h(c)||c.colorSpace!=="lch"||!i(c,["l","c","h"]))return null;let{l:o,c:l,h:r,alpha:t=1}=c;return !f(o)||!f(l)||!f(r)||!f(t)?null:x(w({l:g(o),c:g(l),h:g(r),alpha:g(t)}))},y=new RegExp(`^lch\\(\\s*(?<l>${k})(?<lp>%?)\\s+(?<c>${k})(?<cp>%?)\\s+(?<h>${k})(?<hu>deg|rad|grad|turn)?\\s*(?:/\\s*(?<al>${k})(?<alp>%?)\\s*)?\\)$`,"i"),L=c=>{if(typeof c!="string")return null;let o=y.exec(c.trim())?.groups;if(!o)return null;let l$1=l(o.l),r=o.cp?l(o.c)*1.5:l(o.c),t=o.hu?.toLowerCase()??"deg",n=l(o.h)*(d[t]??1),h=o.al===void 0?1:l(o.al)/(o.alp?100:1);return x(w({l: l$1,c:r,h:n,alpha:h}))};var T=(c,o,l)=>{c.prototype.toLch=function(r=2){let{l:t,c:n,h,alpha:i}=$(this._rawRgb()),b$1=b(n,r);return {l:b(t,r),c:b$1,h:n<.0015?0:b(h,r),alpha:i,colorSpace:"lch"}},c.prototype.toLchString=function(r=2){let{l:t,c:n,h,alpha:i}=this.toLch(r),b=n===0?"none":h;return i<1?`lch(${t} ${n} ${b} / ${i})`:`lch(${t} ${n} ${b})`},o.push(m,L),l.push([m,"lch"],[L,"lch"]);},_=T;export{_ as default};//# sourceMappingURL=lch.mjs.map
 //# sourceMappingURL=lch.mjs.map

dist/plugins/lch.mjs.map

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0 : h < 0 ? h + 360 : h,\n    alpha: lab.alpha,\n    colorSpace: 'lch',\n  };\n};\n\nexport const rgbToLch = (rgb: RgbColor): LchColor => {\n  const { l, c, h, alpha } = rgbToLchRaw(rgb);\n  const cR = round(c, 2);\n  return { l, c: cR, h: cR < 0.0015 ? 0 : round(h, 2), alpha, colorSpace: 'lch' };\n};\n\nexport const lchToRgb = ({ l, c, h, alpha }: LchColor): RgbColor =>\n  labToRgb({\n    l,\n    a: c * Math.cos((h * Math.PI) / 180),\n    b: c * Math.sin((h * Math.PI) / 180),\n    alpha,\n    colorSpace: 'lab',\n  });\n\nexport const parseLchObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'lch') return null;\n  if (!hasKeys(input, ['l', 'c', 'h'])) return null;\n  const { l, c, h, alpha = 1 } = input as { l: unknown; c: unknown; h: unknown; alpha?: unknown };\n  if (!isAnyNumber(l) || !isAnyNumber(c) || !isAnyNumber(h) || !isAnyNumber(alpha)) return null;\n  return lchToRgb(\n    clampLch({\n      l: sanitize(l),\n      c: sanitize(c),\n      h: sanitize(h),\n      alpha: sanitize(alpha),\n    })\n  );\n};\n\n// CSS Color 4: lch(L C H / alpha). 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{\n  ANGLE_UNITS,\n  NUM_OR_NONE,\n  clamp,\n  hasKeys,\n  isAnyNumber,\n  isObject,\n  normalizeHue,\n  parseNum,\n  round,\n  sanitize,\n} from '../helpers.js';\nimport type { LchColor, RgbColor } from '../types.js';\nimport { labToRgb, labToRgbUnclamped, rgbToLab } from './lab.js';\n\nconst clampLch = (lch: Omit<LchColor, 'colorSpace'>): LchColor => ({\n  l: clamp(lch.l, 0, 100),\n  c: Math.max(0, lch.c),\n  h: normalizeHue(lch.h),\n  alpha: clamp(lch.alpha, 0, 1),\n  colorSpace: 'lch',\n});\n\nexport const rgbToLchRaw = (rgb: RgbColor): LchColor => {\n  const lab = rgbToLab(rgb);\n  const c = Math.sqrt(lab.a ** 2 + lab.b ** 2);\n  const h = (Math.atan2(lab.b, lab.a) / Math.PI) * 180;\n  return {\n    l: lab.l,\n    c,\n    // Achromatic threshold on LCH scale (0–~150): below this chroma the hue is numerically unstable.\n    h: c < 0.0015 ? 0 : h < 0 ? h + 360 : h,\n    alpha: lab.alpha,\n    colorSpace: 'lch',\n  };\n};\n\nexport const rgbToLch = (rgb: RgbColor): LchColor => {\n  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'deg';\n  const h = parseNum(g.h!) * (ANGLE_UNITS[unit] ?? 1);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return lchToRgbUnclamped(clampLch({ l, c, h, alpha }));\n};\n","import { parseLchObject, parseLchString, rgbToLchRaw } from '../colorModels/lch.js';\nimport type { Plugin } from '../colordx.js';\nimport { round } from '../helpers.js';\nimport type { LchColor } from '../types.js';\n\ndeclare module '@colordx/core' {\n  interface Colordx {\n    toLch(precision?: number): LchColor;\n    toLchString(precision?: number): string;\n  }\n}\n\nconst lch: Plugin = (ColordxClass, parsers, formatParsers) => {\n  ColordxClass.prototype.toLch = function (precision = 2) {\n    const { l, c, h, alpha } = rgbToLchRaw(this._rawRgb());\n    const cR = round(c, precision);\n    return {\n      l: round(l, precision),\n      c: cR,\n      // Achromatic threshold on LCH scale (0–~150): below this chroma the hue is numerically unstable.\n      h: c < 0.0015 ? 0 : round(h, precision),\n      alpha,\n      colorSpace: 'lch' as const,\n    };\n  };\n  ColordxClass.prototype.toLchString = function (precision = 2) {\n    const { l, c, h, alpha } = this.toLch(precision);\n    const H = c === 0 ? 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dist/plugins/p3.cjs

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{ NUM_OR_NONE, clamp, hasKeys, isAnyNumber, isObject, parseNum, round, sanitize } from '../helpers.js';\nimport { srgbFromLinear, srgbToLinear } from '../transfer.js';\nimport type { P3Color, RgbColor } from '../types.js';\nimport { oklabToLinear, oklabToLinearInto } from './oklab.js';\nimport { clampRgb } from './rgb.js';\n\n// Linear sRGB ↔ Linear Display-P3 (D65, CSS Color 4). The forward matrix has zero\n// blue-output coefficients on the r/g rows — correct per spec, not a bug.\n// Shared between the allocating and *Into variants.\nconst SP3_RR = 0.8224619687,\n  SP3_RG = 0.1775380313;\nconst SP3_GR = 0.0331941989,\n  SP3_GG = 0.9668058011;\nconst SP3_BR = 0.0170826307,\n  SP3_BG = 0.0723974407,\n  SP3_BB = 0.9105199286;\nconst P3S_RR = 1.2249401762805598,\n  P3S_RG = -0.22494017628055996;\nconst P3S_GR = -0.042056954709688163,\n  P3S_GG = 1.0420569547096881;\nconst P3S_BR = -0.019637554590334432,\n  P3S_BG = -0.078636045550631889,\n  P3S_BB = 1.0982736001409663;\n\n/** Zero-allocation sibling of srgbLinearToP3Linear — writes into `out`. Safe when out === input arg. */\nexport const srgbLinearToP3LinearInto = (out: Float64Array | number[], r: number, g: number, b: number): void => {\n  out[0] = SP3_RR * r + SP3_RG * g;\n  out[1] = SP3_GR * r + SP3_GG * g;\n  out[2] = SP3_BR * r + SP3_BG * g + SP3_BB * b;\n};\n\nexport const srgbLinearToP3Linear = (r: number, g: number, b: number): [number, number, number] => [\n  SP3_RR * r + SP3_RG * g,\n  SP3_GR * r + SP3_GG * g,\n  SP3_BR * r + SP3_BG * g + SP3_BB * b,\n];\n\n/** Zero-allocation sibling of linearP3ToSrgb — writes into `out`. */\nexport const linearP3ToSrgbInto = (out: Float64Array | number[], r: number, g: number, b: number): void => {\n  out[0] = P3S_RR * r + P3S_RG * g;\n  out[1] = P3S_GR * r + P3S_GG * g;\n  out[2] = P3S_BR * r + P3S_BG * g + P3S_BB * b;\n};\n\nexport const linearP3ToSrgb = (r: number, g: number, b: number): [number, number, number] => [\n  P3S_RR * r + P3S_RG * g,\n  P3S_GR * r + P3S_GG * g,\n  P3S_BR * r + P3S_BG * g + P3S_BB * b,\n];\n\n// No clamping on output: P3 is wide-gamut, sRGB values can legitimately sit outside [0,1] in P3 space.\n// p3ToRgb clips back to sRGB gamut on the way out.\nexport const rgbToP3Raw = ({ r, g, b, alpha }: RgbColor): P3Color => {\n  const [p3r, p3g, p3b] = srgbLinearToP3Linear(srgbToLinear(r / 255), srgbToLinear(g / 255), srgbToLinear(b / 255));\n  return {\n    r: srgbFromLinear(p3r),\n    g: srgbFromLinear(p3g),\n    b: srgbFromLinear(p3b),\n    alpha,\n    colorSpace: 'display-p3',\n  };\n};\n\nexport const rgbToP3 = (rgb: RgbColor): P3Color => {\n  const { r, g, b, alpha } = rgbToP3Raw(rgb);\n  return { r: round(r, 4), g: round(g, 4), b: round(b, 4), alpha, colorSpace: 'display-p3' };\n};\n\nexport const p3ToRgb = ({ r, g, b, alpha }: P3Color): RgbColor => {\n  const [sr, sg, sb] = linearP3ToSrgb(srgbToLinear(r), srgbToLinear(g), srgbToLinear(b));\n  return clampRgb({\n    r: srgbFromLinear(clamp(sr, 0, 1)) * 255,\n    g: srgbFromLinear(clamp(sg, 0, 1)) * 255,\n    b: srgbFromLinear(clamp(sb, 0, 1)) * 255,\n    alpha,\n  });\n};\n\n/** Unclamped P3 → gamma-encoded sRGB. Channels may exceed [0, 255] for out-of-sRGB-gamut colors. */\nconst p3ToRgbUnclamped = ({ r, g, b, alpha }: P3Color): RgbColor => {\n  const [sr, sg, sb] = linearP3ToSrgb(srgbToLinear(r), srgbToLinear(g), srgbToLinear(b));\n  return {\n    r: srgbFromLinear(sr) * 255,\n    g: srgbFromLinear(sg) * 255,\n    b: srgbFromLinear(sb) * 255,\n    alpha,\n  };\n};\n\nexport const parseP3Object = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'display-p3') return null;\n  if (!hasKeys(input, ['r', 'g', 'b'])) return null;\n  const { r, g, b, alpha = 1 } = input as { r: unknown; g: unknown; b: unknown; alpha?: unknown };\n  if (!isAnyNumber(r) || !isAnyNumber(g) || !isAnyNumber(b) || !isAnyNumber(alpha)) return null;\n  return p3ToRgbUnclamped({\n    r: sanitize(r),\n    g: sanitize(g),\n    b: sanitize(b),\n    alpha: clamp(sanitize(alpha), 0, 1),\n    colorSpace: 'display-p3',\n  });\n};\n\n// CSS Color 4: color(display-p3 r g b / alpha). Channels accept number|percentage|none; 100% = 1.\nconst P3_RE = new RegExp(\n  `^color\\\\(\\\\s*display-p3\\\\s+(?<r>${NUM_OR_NONE})(?<rp>%?)\\\\s+(?<g>${NUM_OR_NONE})(?<gp>%?)` +\n    `\\\\s+(?<b>${NUM_OR_NONE})(?<bp>%?)\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseP3String = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = P3_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const r = g.rp ? parseNum(g.r!) / 100 : parseNum(g.r!);\n  const gc = g.gp ? parseNum(g.g!) / 100 : parseNum(g.g!);\n  const b = g.bp ? parseNum(g.b!) / 100 : parseNum(g.b!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return p3ToRgbUnclamped({\n    r,\n    g: gc,\n    b,\n    alpha: clamp(alpha, 0, 1),\n    colorSpace: 'display-p3',\n  });\n};\n\n/** Unclamped linear Display-P3 channels from OKLab values. */\nexport const oklabToLinearP3 = (l: number, a: number, b: number): [number, number, number] =>\n  srgbLinearToP3Linear(...oklabToLinear(l, a, b));\n\n/** Zero-allocation sibling of oklabToLinearP3 — writes [pr, pg, pb] into `out`. */\nexport const oklabToLinearP3Into = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  oklabToLinearInto(out, l, a, b);\n  srgbLinearToP3LinearInto(out, out[0]!, out[1]!, out[2]!);\n};\n","import { labToLinearSrgb, labToLinearSrgbInto, oklchToLinear, oklchToLinearInto } from '../channels.js';\nimport { linearSrgbToOklab } from '../colorModels/oklab.js';\nimport {\n  linearP3ToSrgb,\n  oklabToLinearP3,\n  parseP3Object,\n  parseP3String,\n  rgbToP3Raw,\n  srgbLinearToP3Linear,\n  srgbLinearToP3LinearInto,\n} from '../colorModels/p3.js';\nimport type { Plugin } from '../colordx.js';\nimport { inGamutCustom, toGamutCustom } from '../gamut.js';\nimport { round } from '../helpers.js';\nimport { srgbFromLinear } from '../transfer.js';\nimport type { AnyColor, P3Color } from '../types.js';\n\nconst p3FromLinear = (r: number, g: number, b: number): [number, number, number] =>\n  linearSrgbToOklab(...linearP3ToSrgb(r, g, b));\n\ndeclare module '@colordx/core' {\n  interface Colordx {\n    toP3(precision?: number): P3Color;\n    toP3String(precision?: number): string;\n  }\n  // eslint-disable-next-line @typescript-eslint/no-namespace\n  namespace Colordx {\n    function toGamutP3(input: AnyColor): Colordx;\n  }\n}\n\n/**\n * Convert linear sRGB channels (from oklchToLinear) to gamma-encoded Display-P3 channels.\n * This is the cheap step — only a matrix multiply + gamma encoding, no cbrt.\n * Pair with oklchToLinear to convert one OKLCH color to multiple spaces without\n * repeating the expensive OKLab pipeline.\n */\nexport const linearToP3Channels = (lr: number, lg: number, lb: number): [number, number, number] => {\n  const [r, g, b] = srgbLinearToP3Linear(lr, lg, lb);\n  return [srgbFromLinear(r), srgbFromLinear(g), srgbFromLinear(b)];\n};\n\n/** Zero-allocation sibling of linearToP3Channels — writes [pr, pg, pb] (gamma-encoded, 0–1) into `out`. */\nexport const linearToP3ChannelsInto = (out: Float64Array | number[], lr: number, lg: number, lb: number): void => {\n  srgbLinearToP3LinearInto(out, lr, lg, lb);\n  out[0] = srgbFromLinear(out[0]!);\n  out[1] = srgbFromLinear(out[1]!);\n  out[2] = srgbFromLinear(out[2]!);\n};\n\n/**\n * Convert OKLCH to gamma-encoded Display-P3 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may\n * exceed this range — callers are responsible for clamping before byte encoding.\n * Uses the sRGB transfer function (P3 does not use DCI-P3 gamma 2.6).\n */\nexport const oklchToP3Channels = (l: number, c: number, h: number): [number, number, number] =>\n  linearToP3Channels(...oklchToLinear(l, c, h));\n\n/** Zero-allocation sibling of oklchToP3Channels — writes [pr, pg, pb] into `out`. */\nexport const oklchToP3ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  oklchToLinearInto(out, l, c, h);\n  linearToP3ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\nconst DEG_TO_RAD = Math.PI / 180;\n\n/**\n * Convert CIE Lab (D50) to gamma-encoded Display-P3 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may exceed [0, 1].\n * Goes Lab → XYZ D50 → linear sRGB → linear P3 → gamma P3.\n */\nexport const labToP3Channels = (l: number, a: number, b: number): [number, number, number] =>\n  linearToP3Channels(...labToLinearSrgb(l, a, b));\n\n/** Zero-allocation sibling of labToP3Channels — writes [pr, pg, pb] into `out`. */\nexport const labToP3ChannelsInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  labToLinearSrgbInto(out, l, a, b);\n  linearToP3ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\n/**\n * Convert CIE LCH (D50) to gamma-encoded Display-P3 channels without object allocation.\n * Polar-to-rectangular to Lab, then Lab → gamma P3. Out-of-gamut channels may exceed [0, 1].\n */\nexport const lchToP3Channels = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToP3Channels(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToP3Channels — writes [pr, pg, pb] into `out`. */\nexport const lchToP3ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToP3ChannelsInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * Returns true if the color is within the Display-P3 gamut.\n * sRGB inputs (hex, rgb, hsl, etc.) always return true (sRGB ⊂ P3).\n */\nexport const inGamutP3 = (input: AnyColor): boolean => inGamutCustom(input, oklabToLinearP3);\n\nconst p3: Plugin = (ColordxClass, parsers, formatParsers) => {\n  ColordxClass.toGamutP3 = (input: AnyColor) => {\n    const mapped = toGamutCustom(input, oklabToLinearP3, p3FromLinear);\n    return mapped !== null ? ColordxClass._makeFromOklab(mapped) : new ColordxClass(input);\n  };\n  ColordxClass.prototype.toP3 = function (precision = 4) {\n    const { r, g, b, alpha } = rgbToP3Raw(this._rawRgb());\n    return {\n      r: round(r, precision),\n      g: round(g, precision),\n      b: round(b, precision),\n      alpha,\n      colorSpace: 'display-p3' as const,\n    };\n  };\n  ColordxClass.prototype.toP3String = function (precision = 4) {\n    const { r, g, b, alpha } = this.toP3(precision);\n    return alpha < 1 ? `color(display-p3 ${r} ${g} ${b} / ${alpha})` : `color(display-p3 ${r} ${g} ${b})`;\n  };\n  parsers.push(parseP3String, parseP3Object);\n  formatParsers.push([parseP3String, 'p3'], [parseP3Object, 'p3']);\n};\n\nexport default p3;\n"]}
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{ labToLinearSrgb, labToLinearSrgbInto, oklchToLinear, oklchToLinearInto } from '../channels.js';\nimport { linearSrgbToOklab } from '../colorModels/oklab.js';\nimport {\n  linearP3ToSrgb,\n  oklabToLinearP3,\n  parseP3Object,\n  parseP3String,\n  rgbToP3Raw,\n  srgbLinearToP3Linear,\n  srgbLinearToP3LinearInto,\n} from '../colorModels/p3.js';\nimport type { Plugin } from '../colordx.js';\nimport { inGamutCustom, toGamutCustom } from '../gamut.js';\nimport { round } from '../helpers.js';\nimport { srgbFromLinear } from '../transfer.js';\nimport type { AnyColor, P3Color } from '../types.js';\n\nconst p3FromLinear = (r: number, g: number, b: number): [number, number, number] =>\n  linearSrgbToOklab(...linearP3ToSrgb(r, g, b));\n\ndeclare module '@colordx/core' {\n  interface Colordx {\n    toP3(precision?: number): P3Color;\n    toP3String(precision?: number): string;\n  }\n  // eslint-disable-next-line @typescript-eslint/no-namespace\n  namespace Colordx {\n    function toGamutP3(input: AnyColor): Colordx;\n  }\n}\n\n/**\n * Convert linear sRGB channels (from oklchToLinear) to gamma-encoded Display-P3 channels.\n * This is the cheap step — only a matrix multiply + gamma encoding, no cbrt.\n * Pair with oklchToLinear to convert one OKLCH color to multiple spaces without\n * repeating the expensive OKLab pipeline.\n */\nexport const linearToP3Channels = (lr: number, lg: number, lb: number): [number, number, number] => {\n  const [r, g, b] = srgbLinearToP3Linear(lr, lg, lb);\n  return [srgbFromLinear(r), srgbFromLinear(g), srgbFromLinear(b)];\n};\n\n/** Zero-allocation sibling of linearToP3Channels — writes [pr, pg, pb] (gamma-encoded, 0–1) into `out`. */\nexport const linearToP3ChannelsInto = (out: Float64Array | number[], lr: number, lg: number, lb: number): void => {\n  srgbLinearToP3LinearInto(out, lr, lg, lb);\n  out[0] = srgbFromLinear(out[0]!);\n  out[1] = srgbFromLinear(out[1]!);\n  out[2] = srgbFromLinear(out[2]!);\n};\n\n/**\n * Convert OKLCH to gamma-encoded Display-P3 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may\n * exceed this range — callers are responsible for clamping before byte encoding.\n * Uses the sRGB transfer function (P3 does not use DCI-P3 gamma 2.6).\n */\nexport const oklchToP3Channels = (l: number, c: number, h: number): [number, number, number] =>\n  linearToP3Channels(...oklchToLinear(l, c, h));\n\n/** Zero-allocation sibling of oklchToP3Channels — writes [pr, pg, pb] into `out`. */\nexport const oklchToP3ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  oklchToLinearInto(out, l, c, h);\n  linearToP3ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\nconst DEG_TO_RAD = Math.PI / 180;\n\n/**\n * Convert CIE Lab (D50) to gamma-encoded Display-P3 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may exceed [0, 1].\n * Goes Lab → XYZ D50 → linear sRGB → linear P3 → gamma P3.\n */\nexport const labToP3Channels = (l: number, a: number, b: number): [number, number, number] =>\n  linearToP3Channels(...labToLinearSrgb(l, a, b));\n\n/** Zero-allocation sibling of labToP3Channels — writes [pr, pg, pb] into `out`. */\nexport const labToP3ChannelsInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  labToLinearSrgbInto(out, l, a, b);\n  linearToP3ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\n/**\n * Convert CIE LCH (D50) to gamma-encoded Display-P3 channels without object allocation.\n * Polar-to-rectangular to Lab, then Lab → gamma P3. Out-of-gamut channels may exceed [0, 1].\n */\nexport const lchToP3Channels = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToP3Channels(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToP3Channels — writes [pr, pg, pb] into `out`. */\nexport const lchToP3ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToP3ChannelsInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * Returns true if the color is within the Display-P3 gamut.\n * sRGB inputs (hex, rgb, hsl, etc.) always return true (sRGB ⊂ P3).\n */\nexport const inGamutP3 = (input: AnyColor): boolean => inGamutCustom(input, oklabToLinearP3);\n\nconst p3: Plugin = (ColordxClass, parsers, formatParsers) => {\n  ColordxClass.toGamutP3 = (input: AnyColor) => {\n    const mapped = toGamutCustom(input, oklabToLinearP3, p3FromLinear);\n    return mapped !== null ? ColordxClass._makeFromOklab(mapped) : new ColordxClass(input);\n  };\n  ColordxClass.prototype.toP3 = function (precision = 4) {\n    const { r, g, b, alpha } = rgbToP3Raw(this._rawRgb());\n    return {\n      r: round(r, precision),\n      g: round(g, precision),\n      b: round(b, precision),\n      alpha,\n      colorSpace: 'display-p3' as const,\n    };\n  };\n  ColordxClass.prototype.toP3String = function (precision = 4) {\n    const { r, g, b, alpha } = this.toP3(precision);\n    return alpha < 1 ? `color(display-p3 ${r} ${g} ${b} / ${alpha})` : `color(display-p3 ${r} ${g} ${b})`;\n  };\n  parsers.push(parseP3String, parseP3Object);\n  formatParsers.push([parseP3String, 'p3'], [parseP3Object, 'p3']);\n};\n\nexport default p3;\n"]}

dist/plugins/p3.mjs

@@ -1,2 +0,2 @@
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 //# sourceMappingURL=p3.mjs.map

dist/plugins/p3.mjs.map

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{ NUM_OR_NONE, clamp, hasKeys, isAnyNumber, isObject, parseNum, round, sanitize } from '../helpers.js';\nimport { srgbFromLinear, srgbToLinear } from '../transfer.js';\nimport type { P3Color, RgbColor } from '../types.js';\nimport { oklabToLinear, oklabToLinearInto } from './oklab.js';\nimport { clampRgb } from './rgb.js';\n\n// Linear sRGB ↔ Linear Display-P3 (D65, CSS Color 4). The forward matrix has zero\n// blue-output coefficients on the r/g rows — correct per spec, not a bug.\n// Shared between the allocating and *Into variants.\nconst SP3_RR = 0.8224619687,\n  SP3_RG = 0.1775380313;\nconst SP3_GR = 0.0331941989,\n  SP3_GG = 0.9668058011;\nconst SP3_BR = 0.0170826307,\n  SP3_BG = 0.0723974407,\n  SP3_BB = 0.9105199286;\nconst P3S_RR = 1.2249401762805598,\n  P3S_RG = -0.22494017628055996;\nconst P3S_GR = -0.042056954709688163,\n  P3S_GG = 1.0420569547096881;\nconst P3S_BR = -0.019637554590334432,\n  P3S_BG = -0.078636045550631889,\n  P3S_BB = 1.0982736001409663;\n\n/** Zero-allocation sibling of srgbLinearToP3Linear — writes into `out`. Safe when out === input arg. */\nexport const srgbLinearToP3LinearInto = (out: Float64Array | number[], r: number, g: number, b: number): void => {\n  out[0] = SP3_RR * r + SP3_RG * g;\n  out[1] = SP3_GR * r + SP3_GG * g;\n  out[2] = SP3_BR * r + SP3_BG * g + SP3_BB * b;\n};\n\nexport const srgbLinearToP3Linear = (r: number, g: number, b: number): [number, number, number] => [\n  SP3_RR * r + SP3_RG * g,\n  SP3_GR * r + SP3_GG * g,\n  SP3_BR * r + SP3_BG * g + SP3_BB * b,\n];\n\n/** Zero-allocation sibling of linearP3ToSrgb — writes into `out`. */\nexport const linearP3ToSrgbInto = (out: Float64Array | number[], r: number, g: number, b: number): void => {\n  out[0] = P3S_RR * r + P3S_RG * g;\n  out[1] = P3S_GR * r + P3S_GG * g;\n  out[2] = P3S_BR * r + P3S_BG * g + P3S_BB * b;\n};\n\nexport const linearP3ToSrgb = (r: number, g: number, b: number): [number, number, number] => [\n  P3S_RR * r + P3S_RG * g,\n  P3S_GR * r + P3S_GG * g,\n  P3S_BR * r + P3S_BG * g + P3S_BB * b,\n];\n\n// No clamping on output: P3 is wide-gamut, sRGB values can legitimately sit outside [0,1] in P3 space.\n// p3ToRgb clips back to sRGB gamut on the way out.\nexport const rgbToP3Raw = ({ r, g, b, alpha }: RgbColor): P3Color => {\n  const [p3r, p3g, p3b] = srgbLinearToP3Linear(srgbToLinear(r / 255), srgbToLinear(g / 255), srgbToLinear(b / 255));\n  return {\n    r: srgbFromLinear(p3r),\n    g: srgbFromLinear(p3g),\n    b: srgbFromLinear(p3b),\n    alpha,\n    colorSpace: 'display-p3',\n  };\n};\n\nexport const rgbToP3 = (rgb: RgbColor): P3Color => {\n  const { r, g, b, alpha } = rgbToP3Raw(rgb);\n  return { r: round(r, 4), g: round(g, 4), b: round(b, 4), alpha, colorSpace: 'display-p3' };\n};\n\nexport const p3ToRgb = ({ r, g, b, alpha }: P3Color): RgbColor => {\n  const [sr, sg, sb] = linearP3ToSrgb(srgbToLinear(r), srgbToLinear(g), srgbToLinear(b));\n  return clampRgb({\n    r: srgbFromLinear(clamp(sr, 0, 1)) * 255,\n    g: srgbFromLinear(clamp(sg, 0, 1)) * 255,\n    b: srgbFromLinear(clamp(sb, 0, 1)) * 255,\n    alpha,\n  });\n};\n\n/** Unclamped P3 → gamma-encoded sRGB. Channels may exceed [0, 255] for out-of-sRGB-gamut colors. */\nconst p3ToRgbUnclamped = ({ r, g, b, alpha }: P3Color): RgbColor => {\n  const [sr, sg, sb] = linearP3ToSrgb(srgbToLinear(r), srgbToLinear(g), srgbToLinear(b));\n  return {\n    r: srgbFromLinear(sr) * 255,\n    g: srgbFromLinear(sg) * 255,\n    b: srgbFromLinear(sb) * 255,\n    alpha,\n  };\n};\n\nexport const parseP3Object = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'display-p3') return null;\n  if (!hasKeys(input, ['r', 'g', 'b'])) return null;\n  const { r, g, b, alpha = 1 } = input as { r: unknown; g: unknown; b: unknown; alpha?: unknown };\n  if (!isAnyNumber(r) || !isAnyNumber(g) || !isAnyNumber(b) || !isAnyNumber(alpha)) return null;\n  return p3ToRgbUnclamped({\n    r: sanitize(r),\n    g: sanitize(g),\n    b: sanitize(b),\n    alpha: clamp(sanitize(alpha), 0, 1),\n    colorSpace: 'display-p3',\n  });\n};\n\n// CSS Color 4: color(display-p3 r g b / alpha). Channels accept number|percentage|none; 100% = 1.\nconst P3_RE = new RegExp(\n  `^color\\\\(\\\\s*display-p3\\\\s+(?<r>${NUM_OR_NONE})(?<rp>%?)\\\\s+(?<g>${NUM_OR_NONE})(?<gp>%?)` +\n    `\\\\s+(?<b>${NUM_OR_NONE})(?<bp>%?)\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseP3String = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = P3_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const r = g.rp ? parseNum(g.r!) / 100 : parseNum(g.r!);\n  const gc = g.gp ? parseNum(g.g!) / 100 : parseNum(g.g!);\n  const b = g.bp ? parseNum(g.b!) / 100 : parseNum(g.b!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return p3ToRgbUnclamped({\n    r,\n    g: gc,\n    b,\n    alpha: clamp(alpha, 0, 1),\n    colorSpace: 'display-p3',\n  });\n};\n\n/** Unclamped linear Display-P3 channels from OKLab values. */\nexport const oklabToLinearP3 = (l: number, a: number, b: number): [number, number, number] =>\n  srgbLinearToP3Linear(...oklabToLinear(l, a, b));\n\n/** Zero-allocation sibling of oklabToLinearP3 — writes [pr, pg, pb] into `out`. */\nexport const oklabToLinearP3Into = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  oklabToLinearInto(out, l, a, b);\n  srgbLinearToP3LinearInto(out, out[0]!, out[1]!, out[2]!);\n};\n","import { labToLinearSrgb, labToLinearSrgbInto, oklchToLinear, oklchToLinearInto } from '../channels.js';\nimport { linearSrgbToOklab } from '../colorModels/oklab.js';\nimport {\n  linearP3ToSrgb,\n  oklabToLinearP3,\n  parseP3Object,\n  parseP3String,\n  rgbToP3Raw,\n  srgbLinearToP3Linear,\n  srgbLinearToP3LinearInto,\n} from '../colorModels/p3.js';\nimport type { Plugin } from '../colordx.js';\nimport { inGamutCustom, toGamutCustom } from '../gamut.js';\nimport { round } from '../helpers.js';\nimport { srgbFromLinear } from '../transfer.js';\nimport type { AnyColor, P3Color } from '../types.js';\n\nconst p3FromLinear = (r: number, g: number, b: number): [number, number, number] =>\n  linearSrgbToOklab(...linearP3ToSrgb(r, g, b));\n\ndeclare module '@colordx/core' {\n  interface Colordx {\n    toP3(precision?: number): P3Color;\n    toP3String(precision?: number): string;\n  }\n  // eslint-disable-next-line @typescript-eslint/no-namespace\n  namespace Colordx {\n    function toGamutP3(input: AnyColor): Colordx;\n  }\n}\n\n/**\n * Convert linear sRGB channels (from oklchToLinear) to gamma-encoded Display-P3 channels.\n * This is the cheap step — only a matrix multiply + gamma encoding, no cbrt.\n * Pair with oklchToLinear to convert one OKLCH color to multiple spaces without\n * repeating the expensive OKLab pipeline.\n */\nexport const linearToP3Channels = (lr: number, lg: number, lb: number): [number, number, number] => {\n  const [r, g, b] = srgbLinearToP3Linear(lr, lg, lb);\n  return [srgbFromLinear(r), srgbFromLinear(g), srgbFromLinear(b)];\n};\n\n/** Zero-allocation sibling of linearToP3Channels — writes [pr, pg, pb] (gamma-encoded, 0–1) into `out`. */\nexport const linearToP3ChannelsInto = (out: Float64Array | number[], lr: number, lg: number, lb: number): void => {\n  srgbLinearToP3LinearInto(out, lr, lg, lb);\n  out[0] = srgbFromLinear(out[0]!);\n  out[1] = srgbFromLinear(out[1]!);\n  out[2] = srgbFromLinear(out[2]!);\n};\n\n/**\n * Convert OKLCH to gamma-encoded Display-P3 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may\n * exceed this range — callers are responsible for clamping before byte encoding.\n * Uses the sRGB transfer function (P3 does not use DCI-P3 gamma 2.6).\n */\nexport const oklchToP3Channels = (l: number, c: number, h: number): [number, number, number] =>\n  linearToP3Channels(...oklchToLinear(l, c, h));\n\n/** Zero-allocation sibling of oklchToP3Channels — writes [pr, pg, pb] into `out`. */\nexport const oklchToP3ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  oklchToLinearInto(out, l, c, h);\n  linearToP3ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\nconst DEG_TO_RAD = Math.PI / 180;\n\n/**\n * Convert CIE Lab (D50) to gamma-encoded Display-P3 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may exceed [0, 1].\n * Goes Lab → XYZ D50 → linear sRGB → linear P3 → gamma P3.\n */\nexport const labToP3Channels = (l: number, a: number, b: number): [number, number, number] =>\n  linearToP3Channels(...labToLinearSrgb(l, a, b));\n\n/** Zero-allocation sibling of labToP3Channels — writes [pr, pg, pb] into `out`. */\nexport const labToP3ChannelsInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  labToLinearSrgbInto(out, l, a, b);\n  linearToP3ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\n/**\n * Convert CIE LCH (D50) to gamma-encoded Display-P3 channels without object allocation.\n * Polar-to-rectangular to Lab, then Lab → gamma P3. Out-of-gamut channels may exceed [0, 1].\n */\nexport const lchToP3Channels = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToP3Channels(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToP3Channels — writes [pr, pg, pb] into `out`. */\nexport const lchToP3ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToP3ChannelsInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * Returns true if the color is within the Display-P3 gamut.\n * sRGB inputs (hex, rgb, hsl, etc.) always return true (sRGB ⊂ P3).\n */\nexport const inGamutP3 = (input: AnyColor): boolean => inGamutCustom(input, oklabToLinearP3);\n\nconst p3: Plugin = (ColordxClass, parsers, formatParsers) => {\n  ColordxClass.toGamutP3 = (input: AnyColor) => {\n    const mapped = toGamutCustom(input, oklabToLinearP3, p3FromLinear);\n    return mapped !== null ? ColordxClass._makeFromOklab(mapped) : new ColordxClass(input);\n  };\n  ColordxClass.prototype.toP3 = function (precision = 4) {\n    const { r, g, b, alpha } = rgbToP3Raw(this._rawRgb());\n    return {\n      r: round(r, precision),\n      g: round(g, precision),\n      b: round(b, precision),\n      alpha,\n      colorSpace: 'display-p3' as const,\n    };\n  };\n  ColordxClass.prototype.toP3String = function (precision = 4) {\n    const { r, g, b, alpha } = this.toP3(precision);\n    return alpha < 1 ? `color(display-p3 ${r} ${g} ${b} / ${alpha})` : `color(display-p3 ${r} ${g} ${b})`;\n  };\n  parsers.push(parseP3String, parseP3Object);\n  formatParsers.push([parseP3String, 'p3'], [parseP3Object, 'p3']);\n};\n\nexport default p3;\n"]}
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{ labToLinearSrgb, labToLinearSrgbInto, oklchToLinear, oklchToLinearInto } from '../channels.js';\nimport { linearSrgbToOklab } from '../colorModels/oklab.js';\nimport {\n  linearP3ToSrgb,\n  oklabToLinearP3,\n  parseP3Object,\n  parseP3String,\n  rgbToP3Raw,\n  srgbLinearToP3Linear,\n  srgbLinearToP3LinearInto,\n} from '../colorModels/p3.js';\nimport type { Plugin } from '../colordx.js';\nimport { inGamutCustom, toGamutCustom } from '../gamut.js';\nimport { round } from '../helpers.js';\nimport { srgbFromLinear } from '../transfer.js';\nimport type { AnyColor, P3Color } from '../types.js';\n\nconst p3FromLinear = (r: number, g: number, b: number): [number, number, number] =>\n  linearSrgbToOklab(...linearP3ToSrgb(r, g, b));\n\ndeclare module '@colordx/core' {\n  interface Colordx {\n    toP3(precision?: number): P3Color;\n    toP3String(precision?: number): string;\n  }\n  // eslint-disable-next-line @typescript-eslint/no-namespace\n  namespace Colordx {\n    function toGamutP3(input: AnyColor): Colordx;\n  }\n}\n\n/**\n * Convert linear sRGB channels (from oklchToLinear) to gamma-encoded Display-P3 channels.\n * This is the cheap step — only a matrix multiply + gamma encoding, no cbrt.\n * Pair with oklchToLinear to convert one OKLCH color to multiple spaces without\n * repeating the expensive OKLab pipeline.\n */\nexport const linearToP3Channels = (lr: number, lg: number, lb: number): [number, number, number] => {\n  const [r, g, b] = srgbLinearToP3Linear(lr, lg, lb);\n  return [srgbFromLinear(r), srgbFromLinear(g), srgbFromLinear(b)];\n};\n\n/** Zero-allocation sibling of linearToP3Channels — writes [pr, pg, pb] (gamma-encoded, 0–1) into `out`. */\nexport const linearToP3ChannelsInto = (out: Float64Array | number[], lr: number, lg: number, lb: number): void => {\n  srgbLinearToP3LinearInto(out, lr, lg, lb);\n  out[0] = srgbFromLinear(out[0]!);\n  out[1] = srgbFromLinear(out[1]!);\n  out[2] = srgbFromLinear(out[2]!);\n};\n\n/**\n * Convert OKLCH to gamma-encoded Display-P3 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may\n * exceed this range — callers are responsible for clamping before byte encoding.\n * Uses the sRGB transfer function (P3 does not use DCI-P3 gamma 2.6).\n */\nexport const oklchToP3Channels = (l: number, c: number, h: number): [number, number, number] =>\n  linearToP3Channels(...oklchToLinear(l, c, h));\n\n/** Zero-allocation sibling of oklchToP3Channels — writes [pr, pg, pb] into `out`. */\nexport const oklchToP3ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  oklchToLinearInto(out, l, c, h);\n  linearToP3ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\nconst DEG_TO_RAD = Math.PI / 180;\n\n/**\n * Convert CIE Lab (D50) to gamma-encoded Display-P3 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may exceed [0, 1].\n * Goes Lab → XYZ D50 → linear sRGB → linear P3 → gamma P3.\n */\nexport const labToP3Channels = (l: number, a: number, b: number): [number, number, number] =>\n  linearToP3Channels(...labToLinearSrgb(l, a, b));\n\n/** Zero-allocation sibling of labToP3Channels — writes [pr, pg, pb] into `out`. */\nexport const labToP3ChannelsInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  labToLinearSrgbInto(out, l, a, b);\n  linearToP3ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\n/**\n * Convert CIE LCH (D50) to gamma-encoded Display-P3 channels without object allocation.\n * Polar-to-rectangular to Lab, then Lab → gamma P3. Out-of-gamut channels may exceed [0, 1].\n */\nexport const lchToP3Channels = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToP3Channels(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToP3Channels — writes [pr, pg, pb] into `out`. */\nexport const lchToP3ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToP3ChannelsInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * Returns true if the color is within the Display-P3 gamut.\n * sRGB inputs (hex, rgb, hsl, etc.) always return true (sRGB ⊂ P3).\n */\nexport const inGamutP3 = (input: AnyColor): boolean => inGamutCustom(input, oklabToLinearP3);\n\nconst p3: Plugin = (ColordxClass, parsers, formatParsers) => {\n  ColordxClass.toGamutP3 = (input: AnyColor) => {\n    const mapped = toGamutCustom(input, oklabToLinearP3, p3FromLinear);\n    return mapped !== null ? ColordxClass._makeFromOklab(mapped) : new ColordxClass(input);\n  };\n  ColordxClass.prototype.toP3 = function (precision = 4) {\n    const { r, g, b, alpha } = rgbToP3Raw(this._rawRgb());\n    return {\n      r: round(r, precision),\n      g: round(g, precision),\n      b: round(b, precision),\n      alpha,\n      colorSpace: 'display-p3' as const,\n    };\n  };\n  ColordxClass.prototype.toP3String = function (precision = 4) {\n    const { r, g, b, alpha } = this.toP3(precision);\n    return alpha < 1 ? `color(display-p3 ${r} ${g} ${b} / ${alpha})` : `color(display-p3 ${r} ${g} ${b})`;\n  };\n  parsers.push(parseP3String, parseP3Object);\n  formatParsers.push([parseP3String, 'p3'], [parseP3Object, 'p3']);\n};\n\nexport default p3;\n"]}

dist/plugins/rec2020.cjs

@@ -1,2 +0,2 @@
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+'use strict';Object.defineProperty(exports,'__esModule',{value:true});var chunkB3CQY27M_cjs=require('../chunk-B3CQY27M.cjs'),chunkGXECYURS_cjs=require('../chunk-GXECYURS.cjs');require('../chunk-GU6TZJ4O.cjs');var chunkX5FCFNQN_cjs=require('../chunk-X5FCFNQN.cjs');require('../chunk-3V4MONNR.cjs');var chunkYISEJCI6_cjs=require('../chunk-YISEJCI6.cjs');var S=(r,n,o)=>chunkGXECYURS_cjs.a(...chunkB3CQY27M_cjs.j(r,n,o)),A=(r,n,o)=>{let[e,t,c]=chunkB3CQY27M_cjs.i(r,n,o);return [chunkX5FCFNQN_cjs.d(e),chunkX5FCFNQN_cjs.d(t),chunkX5FCFNQN_cjs.d(c)]},k=(r,n,o,e)=>{chunkB3CQY27M_cjs.h(r,n,o,e),r[0]=chunkX5FCFNQN_cjs.d(r[0]),r[1]=chunkX5FCFNQN_cjs.d(r[1]),r[2]=chunkX5FCFNQN_cjs.d(r[2]);},P=(r,n,o)=>A(...chunkB3CQY27M_cjs.s(r,n,o)),D=(r,n,o,e)=>{chunkB3CQY27M_cjs.t(r,n,o,e),k(r,r[0],r[1],r[2]);},I=Math.PI/180,F=(r,n,o)=>A(...chunkB3CQY27M_cjs.A(r,n,o)),$=(r,n,o,e)=>{chunkB3CQY27M_cjs.B(r,n,o,e),k(r,r[0],r[1],r[2]);},E=(r,n,o)=>{let e=o*I;return F(r,n*Math.cos(e),n*Math.sin(e))},q=(r,n,o,e)=>{let t=e*I;$(r,n,o*Math.cos(t),o*Math.sin(t));},z=r=>chunkB3CQY27M_cjs.q(r,chunkB3CQY27M_cjs.n),G=(r,n,o)=>{r.toGamutRec2020=e=>{let t=chunkB3CQY27M_cjs.r(e,chunkB3CQY27M_cjs.n,S);return t!==null?r._makeFromOklab(t):new r(e)},r.prototype.toRec2020=function(e=4){let{r:t,g:c,b,alpha:a}=chunkB3CQY27M_cjs.k(this._rawRgb());return {r:chunkYISEJCI6_cjs.b(t,e),g:chunkYISEJCI6_cjs.b(c,e),b:chunkYISEJCI6_cjs.b(b,e),alpha:a,colorSpace:"rec2020"}},r.prototype.toRec2020String=function(e=4){let{r:t,g:c,b,alpha:a}=this.toRec2020(e);return a<1?`color(rec2020 ${t} ${c} ${b} / ${a})`:`color(rec2020 ${t} ${c} ${b})`},n.push(chunkB3CQY27M_cjs.m,chunkB3CQY27M_cjs.l),o.push([chunkB3CQY27M_cjs.m,"rec2020"],[chunkB3CQY27M_cjs.l,"rec2020"]);},B=G;exports.default=B;exports.inGamutRec2020=z;exports.labToRec2020Channels=F;exports.labToRec2020ChannelsInto=$;exports.lchToRec2020Channels=E;exports.lchToRec2020ChannelsInto=q;exports.linearToRec2020Channels=A;exports.linearToRec2020ChannelsInto=k;exports.oklchToRec2020Channels=P;exports.oklchToRec2020ChannelsInto=D;//# sourceMappingURL=rec2020.cjs.map
 //# sourceMappingURL=rec2020.cjs.map

dist/plugins/rec2020.cjs.map

@@ -1,1 +0,1 @@
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{ NUM_OR_NONE, clamp, hasKeys, isAnyNumber, isObject, parseNum, round, sanitize } from '../helpers.js';\nimport { rec2020FromLinear, rec2020ToLinear, srgbFromLinear, srgbToLinear } from '../transfer.js';\nimport type { Rec2020Color, RgbColor } from '../types.js';\nimport { oklabToLinear, oklabToLinearInto } from './oklab.js';\nimport { clampRgb } from './rgb.js';\n\n// Linear sRGB ↔ Linear Rec.2020 (D65 via XYZ, CSS Color 4).\n// Shared between the allocating and *Into variants.\nconst SR2_RR = 0.6274038959,\n  SR2_RG = 0.3292830384,\n  SR2_RB = 0.0433130657;\nconst SR2_GR = 0.0690972894,\n  SR2_GG = 0.9195403951,\n  SR2_GB = 0.0113623156;\nconst SR2_BR = 0.0163914389,\n  SR2_BG = 0.0880133079,\n  SR2_BB = 0.8955952532;\nconst R2S_RR = 1.6604910021084345,\n  R2S_RG = -0.58764113878854951,\n  R2S_RB = -0.072849863319884883;\nconst R2S_GR = -0.12455047452159074,\n  R2S_GG = 1.1328998971259603,\n  R2S_GB = -0.0083494226043694768;\nconst R2S_BR = -0.018150763354905303,\n  R2S_BG = -0.10057889800800739,\n  R2S_BB = 1.1187296613629127;\n\n/** Zero-allocation sibling of srgbLinearToRec2020Linear — writes into `out`. */\nexport const srgbLinearToRec2020LinearInto = (out: Float64Array | number[], r: number, g: number, b: number): void => {\n  out[0] = SR2_RR * r + SR2_RG * g + SR2_RB * b;\n  out[1] = SR2_GR * r + SR2_GG * g + SR2_GB * b;\n  out[2] = SR2_BR * r + SR2_BG * g + SR2_BB * b;\n};\n\nexport const srgbLinearToRec2020Linear = (r: number, g: number, b: number): [number, number, number] => [\n  SR2_RR * r + SR2_RG * g + SR2_RB * b,\n  SR2_GR * r + SR2_GG * g + SR2_GB * b,\n  SR2_BR * r + SR2_BG * g + SR2_BB * b,\n];\n\n/** Zero-allocation sibling of linearRec2020ToSrgb — writes into `out`. */\nexport const linearRec2020ToSrgbInto = (out: Float64Array | number[], r: number, g: number, b: number): void => {\n  out[0] = R2S_RR * r + R2S_RG * g + R2S_RB * b;\n  out[1] = R2S_GR * r + R2S_GG * g + R2S_GB * b;\n  out[2] = R2S_BR * r + R2S_BG * g + R2S_BB * b;\n};\n\nexport const linearRec2020ToSrgb = (r: number, g: number, b: number): [number, number, number] => [\n  R2S_RR * r + R2S_RG * g + R2S_RB * b,\n  R2S_GR * r + R2S_GG * g + R2S_GB * b,\n  R2S_BR * r + R2S_BG * g + R2S_BB * b,\n];\n\nexport const rgbToRec2020Raw = ({ r, g, b, alpha }: RgbColor): Rec2020Color => {\n  const [rr, rg, rb] = srgbLinearToRec2020Linear(srgbToLinear(r / 255), srgbToLinear(g / 255), srgbToLinear(b / 255));\n  return {\n    r: rec2020FromLinear(rr),\n    g: rec2020FromLinear(rg),\n    b: rec2020FromLinear(rb),\n    alpha,\n    colorSpace: 'rec2020',\n  };\n};\n\nexport const rgbToRec2020 = (rgb: RgbColor): Rec2020Color => {\n  const { r, g, b, alpha } = rgbToRec2020Raw(rgb);\n  return { r: round(r, 4), g: round(g, 4), b: round(b, 4), alpha, colorSpace: 'rec2020' };\n};\n\nexport const rec2020ToRgb = ({ r, g, b, alpha }: Rec2020Color): RgbColor => {\n  const [sr, sg, sb] = linearRec2020ToSrgb(rec2020ToLinear(r), rec2020ToLinear(g), rec2020ToLinear(b));\n  return clampRgb({\n    r: srgbFromLinear(clamp(sr, 0, 1)) * 255,\n    g: srgbFromLinear(clamp(sg, 0, 1)) * 255,\n    b: srgbFromLinear(clamp(sb, 0, 1)) * 255,\n    alpha,\n  });\n};\n\n/** Unclamped Rec.2020 → gamma-encoded sRGB. Channels may exceed [0, 255] for out-of-sRGB-gamut colors. */\nconst rec2020ToRgbUnclamped = ({ r, g, b, alpha }: Rec2020Color): RgbColor => {\n  const [sr, sg, sb] = linearRec2020ToSrgb(rec2020ToLinear(r), rec2020ToLinear(g), rec2020ToLinear(b));\n  return {\n    r: srgbFromLinear(sr) * 255,\n    g: srgbFromLinear(sg) * 255,\n    b: srgbFromLinear(sb) * 255,\n    alpha,\n  };\n};\n\nexport const parseRec2020Object = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'rec2020') return null;\n  if (!hasKeys(input, ['r', 'g', 'b'])) return null;\n  const { r, g, b, alpha = 1 } = input as { r: unknown; g: unknown; b: unknown; alpha?: unknown };\n  if (!isAnyNumber(r) || !isAnyNumber(g) || !isAnyNumber(b) || !isAnyNumber(alpha)) return null;\n  return rec2020ToRgbUnclamped({\n    r: sanitize(r),\n    g: sanitize(g),\n    b: sanitize(b),\n    alpha: clamp(sanitize(alpha), 0, 1),\n    colorSpace: 'rec2020',\n  });\n};\n\n// CSS Color 4: color(rec2020 r g b / alpha). Channels accept number|percentage|none; 100% = 1.\nconst REC2020_RE = new RegExp(\n  `^color\\\\(\\\\s*rec2020\\\\s+(?<r>${NUM_OR_NONE})(?<rp>%?)\\\\s+(?<g>${NUM_OR_NONE})(?<gp>%?)` +\n    `\\\\s+(?<b>${NUM_OR_NONE})(?<bp>%?)\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseRec2020String = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = REC2020_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const r = g.rp ? parseNum(g.r!) / 100 : parseNum(g.r!);\n  const gc = g.gp ? parseNum(g.g!) / 100 : parseNum(g.g!);\n  const b = g.bp ? parseNum(g.b!) / 100 : parseNum(g.b!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return rec2020ToRgbUnclamped({\n    r,\n    g: gc,\n    b,\n    alpha: clamp(alpha, 0, 1),\n    colorSpace: 'rec2020',\n  });\n};\n\n/** Unclamped linear Rec.2020 channels from OKLab values. */\nexport const oklabToLinearRec2020 = (l: number, a: number, b: number): [number, number, number] =>\n  srgbLinearToRec2020Linear(...oklabToLinear(l, a, b));\n\n/** Zero-allocation sibling of oklabToLinearRec2020 — writes [rr, rg, rb] into `out`. */\nexport const oklabToLinearRec2020Into = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  oklabToLinearInto(out, l, a, b);\n  srgbLinearToRec2020LinearInto(out, out[0]!, out[1]!, out[2]!);\n};\n","import { labToLinearSrgb, labToLinearSrgbInto, oklchToLinear, oklchToLinearInto } from '../channels.js';\nimport { linearSrgbToOklab } from '../colorModels/oklab.js';\nimport {\n  linearRec2020ToSrgb,\n  oklabToLinearRec2020,\n  parseRec2020Object,\n  parseRec2020String,\n  rgbToRec2020Raw,\n  srgbLinearToRec2020Linear,\n  srgbLinearToRec2020LinearInto,\n} from '../colorModels/rec2020.js';\nimport type { Plugin } from '../colordx.js';\nimport { inGamutCustom, toGamutCustom } from '../gamut.js';\nimport { round } from '../helpers.js';\nimport { rec2020FromLinear } from '../transfer.js';\nimport type { AnyColor, Rec2020Color } from '../types.js';\n\nconst rec2020FromLinearConverter = (r: number, g: number, b: number): [number, number, number] =>\n  linearSrgbToOklab(...linearRec2020ToSrgb(r, g, b));\n\ndeclare module '@colordx/core' {\n  interface Colordx {\n    toRec2020(precision?: number): Rec2020Color;\n    toRec2020String(precision?: number): string;\n  }\n  // eslint-disable-next-line @typescript-eslint/no-namespace\n  namespace Colordx {\n    function toGamutRec2020(input: AnyColor): Colordx;\n  }\n}\n\n/**\n * Convert linear sRGB channels (from oklchToLinear) to gamma-encoded Rec.2020 channels.\n * This is the cheap step — only a matrix multiply + BT.2020 gamma, no cbrt.\n */\nexport const linearToRec2020Channels = (lr: number, lg: number, lb: number): [number, number, number] => {\n  const [r, g, b] = srgbLinearToRec2020Linear(lr, lg, lb);\n  return [rec2020FromLinear(r), rec2020FromLinear(g), rec2020FromLinear(b)];\n};\n\n/** Zero-allocation sibling of linearToRec2020Channels — writes [rr, rg, rb] (gamma-encoded, 0–1) into `out`. */\nexport const linearToRec2020ChannelsInto = (out: Float64Array | number[], lr: number, lg: number, lb: number): void => {\n  srgbLinearToRec2020LinearInto(out, lr, lg, lb);\n  out[0] = rec2020FromLinear(out[0]!);\n  out[1] = rec2020FromLinear(out[1]!);\n  out[2] = rec2020FromLinear(out[2]!);\n};\n\n/**\n * Convert OKLCH to gamma-encoded Rec.2020 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may\n * exceed this range — callers are responsible for clamping before byte encoding.\n * Uses the BT.2020 transfer function (exponent 0.45, distinct from sRGB 1/2.4).\n */\nexport const oklchToRec2020Channels = (l: number, c: number, h: number): [number, number, number] =>\n  linearToRec2020Channels(...oklchToLinear(l, c, h));\n\n/** Zero-allocation sibling of oklchToRec2020Channels — writes [rr, rg, rb] into `out`. */\nexport const oklchToRec2020ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  oklchToLinearInto(out, l, c, h);\n  linearToRec2020ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\nconst DEG_TO_RAD = Math.PI / 180;\n\n/**\n * Convert CIE Lab (D50) to gamma-encoded Rec.2020 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors; out-of-gamut channels may exceed [0, 1].\n * Goes Lab → XYZ D50 → linear sRGB → linear Rec.2020 → BT.2020 gamma.\n */\nexport const labToRec2020Channels = (l: number, a: number, b: number): [number, number, number] =>\n  linearToRec2020Channels(...labToLinearSrgb(l, a, b));\n\n/** Zero-allocation sibling of labToRec2020Channels — writes [rr, rg, rb] into `out`. */\nexport const labToRec2020ChannelsInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  labToLinearSrgbInto(out, l, a, b);\n  linearToRec2020ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\n/**\n * Convert CIE LCH (D50) to gamma-encoded Rec.2020 channels without object allocation.\n * Polar-to-rectangular to Lab, then Lab → gamma Rec.2020.\n */\nexport const lchToRec2020Channels = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToRec2020Channels(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToRec2020Channels — writes [rr, rg, rb] into `out`. */\nexport const lchToRec2020ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToRec2020ChannelsInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * Returns true if the color is within the Rec.2020 gamut.\n * sRGB inputs (hex, rgb, hsl, etc.) always return true (sRGB ⊂ Rec.2020).\n */\nexport const inGamutRec2020 = (input: AnyColor): boolean => inGamutCustom(input, oklabToLinearRec2020);\n\nconst rec2020: Plugin = (ColordxClass, parsers, formatParsers) => {\n  ColordxClass.toGamutRec2020 = (input: AnyColor) => {\n    const mapped = toGamutCustom(input, oklabToLinearRec2020, rec2020FromLinearConverter);\n    return mapped !== null ? ColordxClass._makeFromOklab(mapped) : new ColordxClass(input);\n  };\n  ColordxClass.prototype.toRec2020 = function (precision = 4) {\n    const { r, g, b, alpha } = rgbToRec2020Raw(this._rawRgb());\n    return {\n      r: round(r, precision),\n      g: round(g, precision),\n      b: round(b, precision),\n      alpha,\n      colorSpace: 'rec2020' as const,\n    };\n  };\n  ColordxClass.prototype.toRec2020String = function (precision = 4) {\n    const { r, g, b, alpha } = this.toRec2020(precision);\n    return alpha < 1 ? `color(rec2020 ${r} ${g} ${b} / ${alpha})` : `color(rec2020 ${r} ${g} ${b})`;\n  };\n  parsers.push(parseRec2020String, parseRec2020Object);\n  formatParsers.push([parseRec2020String, 'rec2020'], [parseRec2020Object, 'rec2020']);\n};\n\nexport default rec2020;\n"]}
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{ labToLinearSrgb, labToLinearSrgbInto, oklchToLinear, oklchToLinearInto } from '../channels.js';\nimport { linearSrgbToOklab } from '../colorModels/oklab.js';\nimport {\n  linearRec2020ToSrgb,\n  oklabToLinearRec2020,\n  parseRec2020Object,\n  parseRec2020String,\n  rgbToRec2020Raw,\n  srgbLinearToRec2020Linear,\n  srgbLinearToRec2020LinearInto,\n} from '../colorModels/rec2020.js';\nimport type { Plugin } from '../colordx.js';\nimport { inGamutCustom, toGamutCustom } from '../gamut.js';\nimport { round } from '../helpers.js';\nimport { rec2020FromLinear } from '../transfer.js';\nimport type { AnyColor, Rec2020Color } from '../types.js';\n\nconst rec2020FromLinearConverter = (r: number, g: number, b: number): [number, number, number] =>\n  linearSrgbToOklab(...linearRec2020ToSrgb(r, g, b));\n\ndeclare module '@colordx/core' {\n  interface Colordx {\n    toRec2020(precision?: number): Rec2020Color;\n    toRec2020String(precision?: number): string;\n  }\n  // eslint-disable-next-line @typescript-eslint/no-namespace\n  namespace Colordx {\n    function toGamutRec2020(input: AnyColor): Colordx;\n  }\n}\n\n/**\n * Convert linear sRGB channels (from oklchToLinear) to gamma-encoded Rec.2020 channels.\n * This is the cheap step — only a matrix multiply + BT.2020 gamma, no cbrt.\n */\nexport const linearToRec2020Channels = (lr: number, lg: number, lb: number): [number, number, number] => {\n  const [r, g, b] = srgbLinearToRec2020Linear(lr, lg, lb);\n  return [rec2020FromLinear(r), rec2020FromLinear(g), rec2020FromLinear(b)];\n};\n\n/** Zero-allocation sibling of linearToRec2020Channels — writes [rr, rg, rb] (gamma-encoded, 0–1) into `out`. */\nexport const linearToRec2020ChannelsInto = (out: Float64Array | number[], lr: number, lg: number, lb: number): void => {\n  srgbLinearToRec2020LinearInto(out, lr, lg, lb);\n  out[0] = rec2020FromLinear(out[0]!);\n  out[1] = rec2020FromLinear(out[1]!);\n  out[2] = rec2020FromLinear(out[2]!);\n};\n\n/**\n * Convert OKLCH to gamma-encoded Rec.2020 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may\n * exceed this range — callers are responsible for clamping before byte encoding.\n * Uses the BT.2020 transfer function (exponent 0.45, distinct from sRGB 1/2.4).\n */\nexport const oklchToRec2020Channels = (l: number, c: number, h: number): [number, number, number] =>\n  linearToRec2020Channels(...oklchToLinear(l, c, h));\n\n/** Zero-allocation sibling of oklchToRec2020Channels — writes [rr, rg, rb] into `out`. */\nexport const oklchToRec2020ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  oklchToLinearInto(out, l, c, h);\n  linearToRec2020ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\nconst DEG_TO_RAD = Math.PI / 180;\n\n/**\n * Convert CIE Lab (D50) to gamma-encoded Rec.2020 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors; out-of-gamut channels may exceed [0, 1].\n * Goes Lab → XYZ D50 → linear sRGB → linear Rec.2020 → BT.2020 gamma.\n */\nexport const labToRec2020Channels = (l: number, a: number, b: number): [number, number, number] =>\n  linearToRec2020Channels(...labToLinearSrgb(l, a, b));\n\n/** Zero-allocation sibling of labToRec2020Channels — writes [rr, rg, rb] into `out`. */\nexport const labToRec2020ChannelsInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  labToLinearSrgbInto(out, l, a, b);\n  linearToRec2020ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\n/**\n * Convert CIE LCH (D50) to gamma-encoded Rec.2020 channels without object allocation.\n * Polar-to-rectangular to Lab, then Lab → gamma Rec.2020.\n */\nexport const lchToRec2020Channels = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToRec2020Channels(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToRec2020Channels — writes [rr, rg, rb] into `out`. */\nexport const lchToRec2020ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToRec2020ChannelsInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * Returns true if the color is within the Rec.2020 gamut.\n * sRGB inputs (hex, rgb, hsl, etc.) always return true (sRGB ⊂ Rec.2020).\n */\nexport const inGamutRec2020 = (input: AnyColor): boolean => inGamutCustom(input, oklabToLinearRec2020);\n\nconst rec2020: Plugin = (ColordxClass, parsers, formatParsers) => {\n  ColordxClass.toGamutRec2020 = (input: AnyColor) => {\n    const mapped = toGamutCustom(input, oklabToLinearRec2020, rec2020FromLinearConverter);\n    return mapped !== null ? ColordxClass._makeFromOklab(mapped) : new ColordxClass(input);\n  };\n  ColordxClass.prototype.toRec2020 = function (precision = 4) {\n    const { r, g, b, alpha } = rgbToRec2020Raw(this._rawRgb());\n    return {\n      r: round(r, precision),\n      g: round(g, precision),\n      b: round(b, precision),\n      alpha,\n      colorSpace: 'rec2020' as const,\n    };\n  };\n  ColordxClass.prototype.toRec2020String = function (precision = 4) {\n    const { r, g, b, alpha } = this.toRec2020(precision);\n    return alpha < 1 ? `color(rec2020 ${r} ${g} ${b} / ${alpha})` : `color(rec2020 ${r} ${g} ${b})`;\n  };\n  parsers.push(parseRec2020String, parseRec2020Object);\n  formatParsers.push([parseRec2020String, 'rec2020'], [parseRec2020Object, 'rec2020']);\n};\n\nexport default rec2020;\n"]}

dist/plugins/rec2020.mjs

@@ -1,2 +0,2 @@
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+import {i,h,s,t,A as A$1,B as B$1,q as q$1,n,r,k as k$1,m,l,j}from'../chunk-DIWXRMTC.mjs';import {a}from'../chunk-J6CH5YTL.mjs';import'../chunk-4LKLL3IS.mjs';import {d}from'../chunk-FXCFKFXK.mjs';import'../chunk-Q3O3QQ4H.mjs';import {b}from'../chunk-IOXRZECH.mjs';var S=(r,n,o)=>a(...j(r,n,o)),A=(r,n,o)=>{let[e,t,c]=i(r,n,o);return [d(e),d(t),d(c)]},k=(r,n,o,e)=>{h(r,n,o,e),r[0]=d(r[0]),r[1]=d(r[1]),r[2]=d(r[2]);},P=(r,n,o)=>A(...s(r,n,o)),D=(r,n,o,e)=>{t(r,n,o,e),k(r,r[0],r[1],r[2]);},I=Math.PI/180,F=(r,n,o)=>A(...A$1(r,n,o)),$=(r,n,o,e)=>{B$1(r,n,o,e),k(r,r[0],r[1],r[2]);},E=(r,n,o)=>{let e=o*I;return F(r,n*Math.cos(e),n*Math.sin(e))},q=(r,n,o,e)=>{let t=e*I;$(r,n,o*Math.cos(t),o*Math.sin(t));},z=r=>q$1(r,n),G=(r$1,n$1,o)=>{r$1.toGamutRec2020=e=>{let t=r(e,n,S);return t!==null?r$1._makeFromOklab(t):new r$1(e)},r$1.prototype.toRec2020=function(e=4){let{r:t,g:c,b: b$1,alpha:a}=k$1(this._rawRgb());return {r:b(t,e),g:b(c,e),b:b(b$1,e),alpha:a,colorSpace:"rec2020"}},r$1.prototype.toRec2020String=function(e=4){let{r:t,g:c,b,alpha:a}=this.toRec2020(e);return a<1?`color(rec2020 ${t} ${c} ${b} / ${a})`:`color(rec2020 ${t} ${c} ${b})`},n$1.push(m,l),o.push([m,"rec2020"],[l,"rec2020"]);},B=G;export{B as default,z as inGamutRec2020,F as labToRec2020Channels,$ as labToRec2020ChannelsInto,E as lchToRec2020Channels,q as lchToRec2020ChannelsInto,A as linearToRec2020Channels,k as linearToRec2020ChannelsInto,P as oklchToRec2020Channels,D as oklchToRec2020ChannelsInto};//# sourceMappingURL=rec2020.mjs.map
 //# sourceMappingURL=rec2020.mjs.map

dist/plugins/rec2020.mjs.map

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{ NUM_OR_NONE, clamp, hasKeys, isAnyNumber, isObject, parseNum, round, sanitize } from '../helpers.js';\nimport { rec2020FromLinear, rec2020ToLinear, srgbFromLinear, srgbToLinear } from '../transfer.js';\nimport type { Rec2020Color, RgbColor } from '../types.js';\nimport { oklabToLinear, oklabToLinearInto } from './oklab.js';\nimport { clampRgb } from './rgb.js';\n\n// Linear sRGB ↔ Linear Rec.2020 (D65 via XYZ, CSS Color 4).\n// Shared between the allocating and *Into variants.\nconst SR2_RR = 0.6274038959,\n  SR2_RG = 0.3292830384,\n  SR2_RB = 0.0433130657;\nconst SR2_GR = 0.0690972894,\n  SR2_GG = 0.9195403951,\n  SR2_GB = 0.0113623156;\nconst SR2_BR = 0.0163914389,\n  SR2_BG = 0.0880133079,\n  SR2_BB = 0.8955952532;\nconst R2S_RR = 1.6604910021084345,\n  R2S_RG = -0.58764113878854951,\n  R2S_RB = -0.072849863319884883;\nconst R2S_GR = -0.12455047452159074,\n  R2S_GG = 1.1328998971259603,\n  R2S_GB = -0.0083494226043694768;\nconst R2S_BR = -0.018150763354905303,\n  R2S_BG = -0.10057889800800739,\n  R2S_BB = 1.1187296613629127;\n\n/** Zero-allocation sibling of srgbLinearToRec2020Linear — writes into `out`. */\nexport const srgbLinearToRec2020LinearInto = (out: Float64Array | number[], r: number, g: number, b: number): void => {\n  out[0] = SR2_RR * r + SR2_RG * g + SR2_RB * b;\n  out[1] = SR2_GR * r + SR2_GG * g + SR2_GB * b;\n  out[2] = SR2_BR * r + SR2_BG * g + SR2_BB * b;\n};\n\nexport const srgbLinearToRec2020Linear = (r: number, g: number, b: number): [number, number, number] => [\n  SR2_RR * r + SR2_RG * g + SR2_RB * b,\n  SR2_GR * r + SR2_GG * g + SR2_GB * b,\n  SR2_BR * r + SR2_BG * g + SR2_BB * b,\n];\n\n/** Zero-allocation sibling of linearRec2020ToSrgb — writes into `out`. */\nexport const linearRec2020ToSrgbInto = (out: Float64Array | number[], r: number, g: number, b: number): void => {\n  out[0] = R2S_RR * r + R2S_RG * g + R2S_RB * b;\n  out[1] = R2S_GR * r + R2S_GG * g + R2S_GB * b;\n  out[2] = R2S_BR * r + R2S_BG * g + R2S_BB * b;\n};\n\nexport const linearRec2020ToSrgb = (r: number, g: number, b: number): [number, number, number] => [\n  R2S_RR * r + R2S_RG * g + R2S_RB * b,\n  R2S_GR * r + R2S_GG * g + R2S_GB * b,\n  R2S_BR * r + R2S_BG * g + R2S_BB * b,\n];\n\nexport const rgbToRec2020Raw = ({ r, g, b, alpha }: RgbColor): Rec2020Color => {\n  const [rr, rg, rb] = srgbLinearToRec2020Linear(srgbToLinear(r / 255), srgbToLinear(g / 255), srgbToLinear(b / 255));\n  return {\n    r: rec2020FromLinear(rr),\n    g: rec2020FromLinear(rg),\n    b: rec2020FromLinear(rb),\n    alpha,\n    colorSpace: 'rec2020',\n  };\n};\n\nexport const rgbToRec2020 = (rgb: RgbColor): Rec2020Color => {\n  const { r, g, b, alpha } = rgbToRec2020Raw(rgb);\n  return { r: round(r, 4), g: round(g, 4), b: round(b, 4), alpha, colorSpace: 'rec2020' };\n};\n\nexport const rec2020ToRgb = ({ r, g, b, alpha }: Rec2020Color): RgbColor => {\n  const [sr, sg, sb] = linearRec2020ToSrgb(rec2020ToLinear(r), rec2020ToLinear(g), rec2020ToLinear(b));\n  return clampRgb({\n    r: srgbFromLinear(clamp(sr, 0, 1)) * 255,\n    g: srgbFromLinear(clamp(sg, 0, 1)) * 255,\n    b: srgbFromLinear(clamp(sb, 0, 1)) * 255,\n    alpha,\n  });\n};\n\n/** Unclamped Rec.2020 → gamma-encoded sRGB. Channels may exceed [0, 255] for out-of-sRGB-gamut colors. */\nconst rec2020ToRgbUnclamped = ({ r, g, b, alpha }: Rec2020Color): RgbColor => {\n  const [sr, sg, sb] = linearRec2020ToSrgb(rec2020ToLinear(r), rec2020ToLinear(g), rec2020ToLinear(b));\n  return {\n    r: srgbFromLinear(sr) * 255,\n    g: srgbFromLinear(sg) * 255,\n    b: srgbFromLinear(sb) * 255,\n    alpha,\n  };\n};\n\nexport const parseRec2020Object = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'rec2020') return null;\n  if (!hasKeys(input, ['r', 'g', 'b'])) return null;\n  const { r, g, b, alpha = 1 } = input as { r: unknown; g: unknown; b: unknown; alpha?: unknown };\n  if (!isAnyNumber(r) || !isAnyNumber(g) || !isAnyNumber(b) || !isAnyNumber(alpha)) return null;\n  return rec2020ToRgbUnclamped({\n    r: sanitize(r),\n    g: sanitize(g),\n    b: sanitize(b),\n    alpha: clamp(sanitize(alpha), 0, 1),\n    colorSpace: 'rec2020',\n  });\n};\n\n// CSS Color 4: color(rec2020 r g b / alpha). Channels accept number|percentage|none; 100% = 1.\nconst REC2020_RE = new RegExp(\n  `^color\\\\(\\\\s*rec2020\\\\s+(?<r>${NUM_OR_NONE})(?<rp>%?)\\\\s+(?<g>${NUM_OR_NONE})(?<gp>%?)` +\n    `\\\\s+(?<b>${NUM_OR_NONE})(?<bp>%?)\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseRec2020String = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = REC2020_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const r = g.rp ? parseNum(g.r!) / 100 : parseNum(g.r!);\n  const gc = g.gp ? parseNum(g.g!) / 100 : parseNum(g.g!);\n  const b = g.bp ? parseNum(g.b!) / 100 : parseNum(g.b!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return rec2020ToRgbUnclamped({\n    r,\n    g: gc,\n    b,\n    alpha: clamp(alpha, 0, 1),\n    colorSpace: 'rec2020',\n  });\n};\n\n/** Unclamped linear Rec.2020 channels from OKLab values. */\nexport const oklabToLinearRec2020 = (l: number, a: number, b: number): [number, number, number] =>\n  srgbLinearToRec2020Linear(...oklabToLinear(l, a, b));\n\n/** Zero-allocation sibling of oklabToLinearRec2020 — writes [rr, rg, rb] into `out`. */\nexport const oklabToLinearRec2020Into = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  oklabToLinearInto(out, l, a, b);\n  srgbLinearToRec2020LinearInto(out, out[0]!, out[1]!, out[2]!);\n};\n","import { labToLinearSrgb, labToLinearSrgbInto, oklchToLinear, oklchToLinearInto } from '../channels.js';\nimport { linearSrgbToOklab } from '../colorModels/oklab.js';\nimport {\n  linearRec2020ToSrgb,\n  oklabToLinearRec2020,\n  parseRec2020Object,\n  parseRec2020String,\n  rgbToRec2020Raw,\n  srgbLinearToRec2020Linear,\n  srgbLinearToRec2020LinearInto,\n} from '../colorModels/rec2020.js';\nimport type { Plugin } from '../colordx.js';\nimport { inGamutCustom, toGamutCustom } from '../gamut.js';\nimport { round } from '../helpers.js';\nimport { rec2020FromLinear } from '../transfer.js';\nimport type { AnyColor, Rec2020Color } from '../types.js';\n\nconst rec2020FromLinearConverter = (r: number, g: number, b: number): [number, number, number] =>\n  linearSrgbToOklab(...linearRec2020ToSrgb(r, g, b));\n\ndeclare module '@colordx/core' {\n  interface Colordx {\n    toRec2020(precision?: number): Rec2020Color;\n    toRec2020String(precision?: number): string;\n  }\n  // eslint-disable-next-line @typescript-eslint/no-namespace\n  namespace Colordx {\n    function toGamutRec2020(input: AnyColor): Colordx;\n  }\n}\n\n/**\n * Convert linear sRGB channels (from oklchToLinear) to gamma-encoded Rec.2020 channels.\n * This is the cheap step — only a matrix multiply + BT.2020 gamma, no cbrt.\n */\nexport const linearToRec2020Channels = (lr: number, lg: number, lb: number): [number, number, number] => {\n  const [r, g, b] = srgbLinearToRec2020Linear(lr, lg, lb);\n  return [rec2020FromLinear(r), rec2020FromLinear(g), rec2020FromLinear(b)];\n};\n\n/** Zero-allocation sibling of linearToRec2020Channels — writes [rr, rg, rb] (gamma-encoded, 0–1) into `out`. */\nexport const linearToRec2020ChannelsInto = (out: Float64Array | number[], lr: number, lg: number, lb: number): void => {\n  srgbLinearToRec2020LinearInto(out, lr, lg, lb);\n  out[0] = rec2020FromLinear(out[0]!);\n  out[1] = rec2020FromLinear(out[1]!);\n  out[2] = rec2020FromLinear(out[2]!);\n};\n\n/**\n * Convert OKLCH to gamma-encoded Rec.2020 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may\n * exceed this range — callers are responsible for clamping before byte encoding.\n * Uses the BT.2020 transfer function (exponent 0.45, distinct from sRGB 1/2.4).\n */\nexport const oklchToRec2020Channels = (l: number, c: number, h: number): [number, number, number] =>\n  linearToRec2020Channels(...oklchToLinear(l, c, h));\n\n/** Zero-allocation sibling of oklchToRec2020Channels — writes [rr, rg, rb] into `out`. */\nexport const oklchToRec2020ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  oklchToLinearInto(out, l, c, h);\n  linearToRec2020ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\nconst DEG_TO_RAD = Math.PI / 180;\n\n/**\n * Convert CIE Lab (D50) to gamma-encoded Rec.2020 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors; out-of-gamut channels may exceed [0, 1].\n * Goes Lab → XYZ D50 → linear sRGB → linear Rec.2020 → BT.2020 gamma.\n */\nexport const labToRec2020Channels = (l: number, a: number, b: number): [number, number, number] =>\n  linearToRec2020Channels(...labToLinearSrgb(l, a, b));\n\n/** Zero-allocation sibling of labToRec2020Channels — writes [rr, rg, rb] into `out`. */\nexport const labToRec2020ChannelsInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  labToLinearSrgbInto(out, l, a, b);\n  linearToRec2020ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\n/**\n * Convert CIE LCH (D50) to gamma-encoded Rec.2020 channels without object allocation.\n * Polar-to-rectangular to Lab, then Lab → gamma Rec.2020.\n */\nexport const lchToRec2020Channels = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToRec2020Channels(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToRec2020Channels — writes [rr, rg, rb] into `out`. */\nexport const lchToRec2020ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToRec2020ChannelsInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * Returns true if the color is within the Rec.2020 gamut.\n * sRGB inputs (hex, rgb, hsl, etc.) always return true (sRGB ⊂ Rec.2020).\n */\nexport const inGamutRec2020 = (input: AnyColor): boolean => inGamutCustom(input, oklabToLinearRec2020);\n\nconst rec2020: Plugin = (ColordxClass, parsers, formatParsers) => {\n  ColordxClass.toGamutRec2020 = (input: AnyColor) => {\n    const mapped = toGamutCustom(input, oklabToLinearRec2020, rec2020FromLinearConverter);\n    return mapped !== null ? ColordxClass._makeFromOklab(mapped) : new ColordxClass(input);\n  };\n  ColordxClass.prototype.toRec2020 = function (precision = 4) {\n    const { r, g, b, alpha } = rgbToRec2020Raw(this._rawRgb());\n    return {\n      r: round(r, precision),\n      g: round(g, precision),\n      b: round(b, precision),\n      alpha,\n      colorSpace: 'rec2020' as const,\n    };\n  };\n  ColordxClass.prototype.toRec2020String = function (precision = 4) {\n    const { r, g, b, alpha } = this.toRec2020(precision);\n    return alpha < 1 ? `color(rec2020 ${r} ${g} ${b} / ${alpha})` : `color(rec2020 ${r} ${g} ${b})`;\n  };\n  parsers.push(parseRec2020String, parseRec2020Object);\n  formatParsers.push([parseRec2020String, 'rec2020'], [parseRec2020Object, 'rec2020']);\n};\n\nexport default rec2020;\n"]}
+{"version":3,"sources":["../../src/plugins/rec2020.ts"],"names":["rec2020FromLinearConverter","g","b","linearSrgbToOklab","linearRec2020ToSrgb","linearToRec2020Channels","lr","lg","lb","r","srgbLinearToRec2020Linear","rec2020FromLinear","linearToRec2020ChannelsInto","out","srgbLinearToRec2020LinearInto","oklchToRec2020Channels","l","c","h","oklchToLinear","oklchToRec2020ChannelsInto","oklchToLinearInto","DEG_TO_RAD","labToRec2020Channels","a","labToLinearSrgb","labToRec2020ChannelsInto","labToLinearSrgbInto","lchToRec2020Channels","hRad","lchToRec2020ChannelsInto","inGamutRec2020","input","inGamutCustom","oklabToLinearRec2020","rec2020","ColordxClass","parsers","formatParsers","mapped","toGamutCustom","precision","alpha","rgbToRec2020Raw","round","parseRec2020String","parseRec2020Object","rec2020_default"],"mappings":"wQAiBA,IAAMA,EAA6B,CAAC,CAAA,CAAWC,EAAWC,CAAAA,GACxDC,CAAAA,CAAkB,GAAGC,CAAAA,CAAoB,CAAA,CAAGH,CAAAA,CAAGC,CAAC,CAAC,CAAA,CAiBtCG,CAAAA,CAA0B,CAACC,CAAAA,CAAYC,CAAAA,CAAYC,IAAyC,CACvG,GAAM,CAACC,CAAAA,CAAGR,EAAGC,CAAC,CAAA,CAAIQ,EAA0BJ,CAAAA,CAAIC,CAAAA,CAAIC,CAAE,CAAA,CACtD,OAAO,CAACG,CAAAA,CAAkBF,CAAC,CAAA,CAAGE,CAAAA,CAAkBV,CAAC,CAAA,CAAGU,CAAAA,CAAkBT,CAAC,CAAC,CAC1E,CAAA,CAGaU,CAAAA,CAA8B,CAACC,CAAAA,CAA8BP,CAAAA,CAAYC,EAAYC,CAAAA,GAAqB,CACrHM,EAA8BD,CAAAA,CAAKP,CAAAA,CAAIC,CAAAA,CAAIC,CAAE,EAC7CK,CAAAA,CAAI,CAAC,EAAIF,CAAAA,CAAkBE,CAAAA,CAAI,CAAC,CAAE,CAAA,CAClCA,CAAAA,CAAI,CAAC,EAAIF,CAAAA,CAAkBE,CAAAA,CAAI,CAAC,CAAE,CAAA,CAClCA,EAAI,CAAC,CAAA,CAAIF,EAAkBE,CAAAA,CAAI,CAAC,CAAE,EACpC,CAAA,CAQaE,EAAyB,CAACC,CAAAA,CAAWC,EAAWC,CAAAA,GAC3Db,CAAAA,CAAwB,GAAGc,CAAAA,CAAcH,EAAGC,CAAAA,CAAGC,CAAC,CAAC,CAAA,CAGtCE,CAAAA,CAA6B,CAACP,CAAAA,CAA8BG,CAAAA,CAAWC,CAAAA,CAAWC,CAAAA,GAAoB,CACjHG,CAAAA,CAAkBR,CAAAA,CAAKG,EAAGC,CAAAA,CAAGC,CAAC,EAC9BN,CAAAA,CAA4BC,CAAAA,CAAKA,CAAAA,CAAI,CAAC,EAAIA,CAAAA,CAAI,CAAC,EAAIA,CAAAA,CAAI,CAAC,CAAE,EAC5D,CAAA,CAEMS,CAAAA,CAAa,IAAA,CAAK,GAAK,GAAA,CAOhBC,CAAAA,CAAuB,CAACP,CAAAA,CAAWQ,CAAAA,CAAWtB,IACzDG,CAAAA,CAAwB,GAAGoB,GAAAA,CAAgBT,CAAAA,CAAGQ,EAAGtB,CAAC,CAAC,EAGxCwB,CAAAA,CAA2B,CAACb,EAA8BG,CAAAA,CAAWQ,CAAAA,CAAWtB,CAAAA,GAAoB,CAC/GyB,IAAoBd,CAAAA,CAAKG,CAAAA,CAAGQ,EAAGtB,CAAC,CAAA,CAChCU,EAA4BC,CAAAA,CAAKA,CAAAA,CAAI,CAAC,CAAA,CAAIA,EAAI,CAAC,CAAA,CAAIA,EAAI,CAAC,CAAE,EAC5D,CAAA,CAMae,CAAAA,CAAuB,CAACZ,CAAAA,CAAWC,CAAAA,CAAWC,IAAwC,CACjG,IAAMW,EAAOX,CAAAA,CAAII,CAAAA,CACjB,OAAOC,CAAAA,CAAqBP,CAAAA,CAAGC,CAAAA,CAAI,IAAA,CAAK,IAAIY,CAAI,CAAA,CAAGZ,EAAI,IAAA,CAAK,GAAA,CAAIY,CAAI,CAAC,CACvE,CAAA,CAGaC,CAAAA,CAA2B,CAACjB,CAAAA,CAA8BG,CAAAA,CAAWC,EAAWC,CAAAA,GAAoB,CAC/G,IAAMW,CAAAA,CAAOX,CAAAA,CAAII,CAAAA,CACjBI,CAAAA,CAAyBb,EAAKG,CAAAA,CAAGC,CAAAA,CAAI,KAAK,GAAA,CAAIY,CAAI,EAAGZ,CAAAA,CAAI,IAAA,CAAK,GAAA,CAAIY,CAAI,CAAC,EACzE,CAAA,CAMaE,EAAkBC,CAAAA,EAA6BC,GAAAA,CAAcD,EAAOE,CAAoB,CAAA,CAE/FC,CAAAA,CAAkB,CAACC,IAAcC,GAAAA,CAASC,CAAAA,GAAkB,CAChEF,GAAAA,CAAa,cAAA,CAAkBJ,GAAoB,CACjD,IAAMO,CAAAA,CAASC,CAAAA,CAAcR,EAAOE,CAAAA,CAAsBlC,CAA0B,EACpF,OAAOuC,CAAAA,GAAW,KAAOH,GAAAA,CAAa,cAAA,CAAeG,CAAM,CAAA,CAAI,IAAIH,GAAAA,CAAaJ,CAAK,CACvF,CAAA,CACAI,GAAAA,CAAa,UAAU,SAAA,CAAY,SAAUK,EAAY,CAAA,CAAG,CAC1D,GAAM,CAAE,CAAA,CAAAhC,EAAG,CAAA,CAAAR,CAAAA,IAAGC,IAAG,KAAA,CAAAwC,CAAM,CAAA,CAAIC,GAAAA,CAAgB,KAAK,OAAA,EAAS,EACzD,OAAO,CACL,EAAGC,CAAAA,CAAMnC,CAAAA,CAAGgC,CAAS,CAAA,CACrB,EAAGG,CAAAA,CAAM3C,CAAAA,CAAGwC,CAAS,CAAA,CACrB,CAAA,CAAGG,EAAM1C,GAAA,CAAGuC,CAAS,CAAA,CACrB,KAAA,CAAAC,EACA,UAAA,CAAY,SACd,CACF,CAAA,CACAN,GAAAA,CAAa,UAAU,eAAA,CAAkB,SAAUK,CAAAA,CAAY,CAAA,CAAG,CAChE,GAAM,CAAE,EAAAhC,CAAAA,CAAG,CAAA,CAAAR,EAAG,CAAA,CAAG,KAAA,CAAAyC,CAAM,CAAA,CAAI,KAAK,SAAA,CAAUD,CAAS,EACnD,OAAOC,CAAAA,CAAQ,EAAI,CAAA,cAAA,EAAiBjC,CAAC,CAAA,CAAA,EAAIR,CAAC,IAAI,CAAC,CAAA,GAAA,EAAMyC,CAAK,CAAA,CAAA,CAAA,CAAM,CAAA,cAAA,EAAiBjC,CAAC,CAAA,CAAA,EAAIR,CAAC,CAAA,CAAA,EAAI,CAAC,GAC9F,CAAA,CACAoC,GAAAA,CAAQ,KAAKQ,CAAAA,CAAoBC,CAAkB,EACnDR,CAAAA,CAAc,IAAA,CAAK,CAACO,CAAAA,CAAoB,SAAS,EAAG,CAACC,CAAAA,CAAoB,SAAS,CAAC,EACrF,EAEOC,CAAAA,CAAQZ","file":"rec2020.mjs","sourcesContent":["import { labToLinearSrgb, labToLinearSrgbInto, oklchToLinear, oklchToLinearInto } from '../channels.js';\nimport { linearSrgbToOklab } from '../colorModels/oklab.js';\nimport {\n  linearRec2020ToSrgb,\n  oklabToLinearRec2020,\n  parseRec2020Object,\n  parseRec2020String,\n  rgbToRec2020Raw,\n  srgbLinearToRec2020Linear,\n  srgbLinearToRec2020LinearInto,\n} from '../colorModels/rec2020.js';\nimport type { Plugin } from '../colordx.js';\nimport { inGamutCustom, toGamutCustom } from '../gamut.js';\nimport { round } from '../helpers.js';\nimport { rec2020FromLinear } from '../transfer.js';\nimport type { AnyColor, Rec2020Color } from '../types.js';\n\nconst rec2020FromLinearConverter = (r: number, g: number, b: number): [number, number, number] =>\n  linearSrgbToOklab(...linearRec2020ToSrgb(r, g, b));\n\ndeclare module '@colordx/core' {\n  interface Colordx {\n    toRec2020(precision?: number): Rec2020Color;\n    toRec2020String(precision?: number): string;\n  }\n  // eslint-disable-next-line @typescript-eslint/no-namespace\n  namespace Colordx {\n    function toGamutRec2020(input: AnyColor): Colordx;\n  }\n}\n\n/**\n * Convert linear sRGB channels (from oklchToLinear) to gamma-encoded Rec.2020 channels.\n * This is the cheap step — only a matrix multiply + BT.2020 gamma, no cbrt.\n */\nexport const linearToRec2020Channels = (lr: number, lg: number, lb: number): [number, number, number] => {\n  const [r, g, b] = srgbLinearToRec2020Linear(lr, lg, lb);\n  return [rec2020FromLinear(r), rec2020FromLinear(g), rec2020FromLinear(b)];\n};\n\n/** Zero-allocation sibling of linearToRec2020Channels — writes [rr, rg, rb] (gamma-encoded, 0–1) into `out`. */\nexport const linearToRec2020ChannelsInto = (out: Float64Array | number[], lr: number, lg: number, lb: number): void => {\n  srgbLinearToRec2020LinearInto(out, lr, lg, lb);\n  out[0] = rec2020FromLinear(out[0]!);\n  out[1] = rec2020FromLinear(out[1]!);\n  out[2] = rec2020FromLinear(out[2]!);\n};\n\n/**\n * Convert OKLCH to gamma-encoded Rec.2020 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may\n * exceed this range — callers are responsible for clamping before byte encoding.\n * Uses the BT.2020 transfer function (exponent 0.45, distinct from sRGB 1/2.4).\n */\nexport const oklchToRec2020Channels = (l: number, c: number, h: number): [number, number, number] =>\n  linearToRec2020Channels(...oklchToLinear(l, c, h));\n\n/** Zero-allocation sibling of oklchToRec2020Channels — writes [rr, rg, rb] into `out`. */\nexport const oklchToRec2020ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  oklchToLinearInto(out, l, c, h);\n  linearToRec2020ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\nconst DEG_TO_RAD = Math.PI / 180;\n\n/**\n * Convert CIE Lab (D50) to gamma-encoded Rec.2020 channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors; out-of-gamut channels may exceed [0, 1].\n * Goes Lab → XYZ D50 → linear sRGB → linear Rec.2020 → BT.2020 gamma.\n */\nexport const labToRec2020Channels = (l: number, a: number, b: number): [number, number, number] =>\n  linearToRec2020Channels(...labToLinearSrgb(l, a, b));\n\n/** Zero-allocation sibling of labToRec2020Channels — writes [rr, rg, rb] into `out`. */\nexport const labToRec2020ChannelsInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  labToLinearSrgbInto(out, l, a, b);\n  linearToRec2020ChannelsInto(out, out[0]!, out[1]!, out[2]!);\n};\n\n/**\n * Convert CIE LCH (D50) to gamma-encoded Rec.2020 channels without object allocation.\n * Polar-to-rectangular to Lab, then Lab → gamma Rec.2020.\n */\nexport const lchToRec2020Channels = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToRec2020Channels(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToRec2020Channels — writes [rr, rg, rb] into `out`. */\nexport const lchToRec2020ChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToRec2020ChannelsInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * Returns true if the color is within the Rec.2020 gamut.\n * sRGB inputs (hex, rgb, hsl, etc.) always return true (sRGB ⊂ Rec.2020).\n */\nexport const inGamutRec2020 = (input: AnyColor): boolean => inGamutCustom(input, oklabToLinearRec2020);\n\nconst rec2020: Plugin = (ColordxClass, parsers, formatParsers) => {\n  ColordxClass.toGamutRec2020 = (input: AnyColor) => {\n    const mapped = toGamutCustom(input, oklabToLinearRec2020, rec2020FromLinearConverter);\n    return mapped !== null ? ColordxClass._makeFromOklab(mapped) : new ColordxClass(input);\n  };\n  ColordxClass.prototype.toRec2020 = function (precision = 4) {\n    const { r, g, b, alpha } = rgbToRec2020Raw(this._rawRgb());\n    return {\n      r: round(r, precision),\n      g: round(g, precision),\n      b: round(b, precision),\n      alpha,\n      colorSpace: 'rec2020' as const,\n    };\n  };\n  ColordxClass.prototype.toRec2020String = function (precision = 4) {\n    const { r, g, b, alpha } = this.toRec2020(precision);\n    return alpha < 1 ? `color(rec2020 ${r} ${g} ${b} / ${alpha})` : `color(rec2020 ${r} ${g} ${b})`;\n  };\n  parsers.push(parseRec2020String, parseRec2020Object);\n  formatParsers.push([parseRec2020String, 'rec2020'], [parseRec2020Object, 'rec2020']);\n};\n\nexport default rec2020;\n"]}

package.json

 {
   "name": "@colordx/core",
-  "version": "5.4.0",
+  "version": "5.4.1",
   "description": "A high-performance color library with extended support for modern color spaces including OKLCH, OKLAB, Display-P3, and more",
@@ -5,0 +5,0 @@ "author": "Dmitrii Kriaklin",

README.md

@@ -374,2 +374,17 @@ <p align="center">
 
+Gamut checks and mapping accept wide-gamut inputs in every supported form — `oklab()` / `oklch()`, CIE `lab()` / `lch()` strings, and the corresponding object shapes (including branded `{ colorSpace: 'lab' | 'lch' }` objects):
+
+```ts
+// CIE LCH object — recognized as wide-gamut, not clamped at parse time
+const lch = { l: 50, c: 100, h: 180, alpha: 1, colorSpace: 'lch' as const };
+inGamutSrgb(lch);  // false — outside sRGB
+inGamutP3(lch);    // false — outside P3
+colordx(lch).toHex();           // '#009774' — naive clip
+colordx(lch).mapSrgb().toHex(); // '#008471' — chroma-reduced (CSS Color 4)
+
+// CIE Lab string works too
+inGamutSrgb('lab(50 100 0)'); // false
+Colordx.toGamutSrgb('lab(50 100 0)'); // → Colordx at the sRGB boundary
+```
+
 ## Plugins
@@ -376,0 +391,0 @@

dist/chunk-FEPIYR27.mjs

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dist/chunk-FEPIYR27.mjs.map

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{ labToXyz } from './colorModels/lab.js';\nimport { linearSrgbToOklab, oklabToLinear } from './colorModels/oklab.js';\nimport { xyzD50ToLinearSrgb } from './colorModels/xyz.js';\nimport { ANGLE_UNITS, clamp } from './helpers.js';\nimport type { AnyColor, LabColor, OklabColor, OklchColor } from './types.js';\n\nconst OKLCH_RE =\n  /^oklch\\(\\s*([+-]?\\d*\\.?\\d+)(%?)\\s+([+-]?\\d*\\.?\\d+)(%?)\\s+([+-]?\\d*\\.?\\d+)(deg|rad|grad|turn)?\\s*(?:\\/\\s*([+-]?\\d*\\.?\\d+)(%)?\\s*)?\\)$/i;\n\nconst OKLAB_RE =\n  /^oklab\\(\\s*([+-]?\\d*\\.?\\d+)(%?)\\s+([+-]?\\d*\\.?\\d+)(%?)\\s+([+-]?\\d*\\.?\\d+)(%?)\\s*(?:\\/\\s*([+-]?\\d*\\.?\\d+)(%)?\\s*)?\\)$/i;\n\n/**\n * Extract raw OKLab {l, a, b, alpha} without clamping.\n * Returns null for inputs that are already sRGB-bounded (hex, rgb, hsl, hsv, hwb, etc.).\n */\nconst getRawOklab = (input: AnyColor): { l: number; a: number; b: number; alpha: number } | null => {\n  if (typeof input === 'object' && input !== null) {\n    const obj = input as unknown as Record<string, unknown>;\n    // OklabColor: l/a/b present, no 'lab' colorSpace brand\n    if ('l' in obj && 'a' in obj && 'b' in obj && obj.colorSpace !== 'lab' && !('c' in obj) && !('r' in obj)) {\n      const c = input as OklabColor;\n      if (\n        typeof c.l === 'number' &&\n        typeof c.a === 'number' &&\n        typeof c.b === 'number' &&\n        typeof c.alpha === 'number'\n      ) {\n        return { l: c.l, a: c.a, b: c.b, alpha: c.alpha };\n      }\n    }\n    // OklchColor: l/c/h present, no 'lch' colorSpace brand\n    if ('l' in obj && 'c' in obj && 'h' in obj && obj.colorSpace !== 'lch' && !('a' in obj) && !('r' in obj)) {\n      const c = input as OklchColor;\n      if (typeof c.l === 'number' && typeof c.c === 'number' && typeof c.h === 'number') {\n        const hRad = (c.h * Math.PI) / 180;\n        return { l: c.l, a: c.c * Math.cos(hRad), b: c.c * Math.sin(hRad), alpha: c.alpha };\n      }\n    }\n    // LabColor: convert Lab (D50) → XYZ D50 → D65 → linear sRGB → OKLab (no clamping)\n    if (obj.colorSpace === 'lab') {\n      const c = input as LabColor;\n      if (typeof c.l !== 'number' || typeof c.a !== 'number' || typeof c.b !== 'number') return null;\n      const { x, y, z } = labToXyz(c);\n      const [lr, lg, lb] = xyzD50ToLinearSrgb(x, y, z);\n      const [ol, oa, ob] = linearSrgbToOklab(lr, lg, lb);\n      return { l: ol, a: oa, b: ob, alpha: typeof c.alpha === 'number' ? c.alpha : 1 };\n    }\n    return null;\n  }\n\n  if (typeof input === 'string') {\n    let m = OKLCH_RE.exec(input);\n    if (m) {\n      const l = m[2] ? Number(m[1]) / 100 : Number(m[1]);\n      const c = m[4] ? Number(m[3]) * 0.004 : Number(m[3]);\n      const unit = m[6]?.toLowerCase() ?? 'deg';\n      const hDeg = Number(m[5]) * (ANGLE_UNITS[unit] ?? 1);\n      const hRad = (hDeg * Math.PI) / 180;\n      const alpha = m[7] === undefined ? 1 : Number(m[7]) / (m[8] ? 100 : 1);\n      return { l, a: c * Math.cos(hRad), b: c * Math.sin(hRad), alpha };\n    }\n    m = OKLAB_RE.exec(input);\n    if (m) {\n      const l = m[2] ? Number(m[1]) / 100 : Number(m[1]);\n      const a = m[4] ? Number(m[3]) * 0.004 : Number(m[3]);\n      const b = m[6] ? Number(m[5]) * 0.004 : Number(m[5]);\n      const alpha = m[7] === undefined ? 1 : Number(m[7]) / (m[8] ? 100 : 1);\n      return { l, a, b, alpha };\n    }\n    return null;\n  }\n\n  return null;\n};\n\n// Tolerance for inGamut* checks — NOT used in gamut mapping, which uses strict bounds.\n// Covers two sources of error:\n//   1. Matrix floating-point noise: accumulated cbrt + matrix error is ~3e-10\n//   2. Value rounding: OKLCH stored at 4 dp (L, C) / 2 dp (H) produces linear-sRGB\n//      deviations up to 4.4e-4 on sRGB boundary colors (exhaustive scan of all 256^3 sRGB\n//      values confirms this). EPS = 5e-4 absorbs all rounding artifacts while staying below\n//      ~1.6 gamma-encoded steps (imperceptible), and correctly rejects genuine out-of-gamut\n//      colors (typically 1e-3 and above).\nconst EPS = 5e-4;\n\nconst isLinearInGamut = (r: number, g: number, b: number): boolean =>\n  r >= -EPS && r <= 1 + EPS && g >= -EPS && g <= 1 + EPS && b >= -EPS && b <= 1 + EPS;\n\nconst strictInGamut = (r: number, g: number, b: number): boolean =>\n  r >= 0 && r <= 1 && g >= 0 && g <= 1 && b >= 0 && b <= 1;\n\n/**\n * Returns true if the color is within the sRGB gamut.\n * Always true for hex, rgb, hsl, hsv, and hwb inputs.\n * For oklch/oklab inputs, checks whether the computed linear sRGB channels are in [0, 1].\n */\nexport const inGamutSrgb = (input: AnyColor): boolean => {\n  const raw = getRawOklab(input);\n  if (raw === null) return true;\n  const [r, g, b] = oklabToLinear(raw.l, raw.a, raw.b);\n  return isLinearInGamut(r, g, b);\n};\n\n// CSS Color 4 gamut mapping constants\n// https://www.w3.org/TR/css-color-4/#css-gamut-mapping\nconst JND = 0.02;\nconst GAMUT_EPSILON = 0.0001;\n\n/** Euclidean distance in OKLab — the CSS Color 4 deltaEOK metric. */\nconst deltaEOK = (lab1: readonly [number, number, number], lab2: readonly [number, number, number]): number => {\n  const dl = lab1[0] - lab2[0];\n  const da = lab1[1] - lab2[1];\n  const db = lab1[2] - lab2[2];\n  return Math.sqrt(dl * dl + da * da + db * db);\n};\n\nexport type LinearConverter = (l: number, a: number, b: number) => [number, number, number];\nexport type FromLinearConverter = (r: number, g: number, b: number) => [number, number, number];\n\n/**\n * CSS Color 4 gamut mapping algorithm.\n * Binary-searches for the highest chroma where clip(color) is within JND (0.02 deltaEOK)\n * of the chroma-reduced color, then returns the clipped result.\n * This preserves lightness and hue while accepting only perceptually negligible clip error.\n *\n * toLinear: OKLab → unclamped linear target-space channels\n * fromLinear: linear target-space channels → OKLab (used to measure deltaEOK of clipped color)\n */\nconst cssGamutMap = (\n  l: number,\n  a: number,\n  b: number,\n  alpha: number,\n  toLinear: LinearConverter,\n  fromLinear: FromLinearConverter\n): OklabColor => {\n  if (l >= 1) return { l: 1, a: 0, b: 0, alpha };\n  if (l <= 0) return { l: 0, a: 0, b: 0, alpha };\n\n  const [r0, g0, b0] = toLinear(l, a, b);\n  if (strictInGamut(r0, g0, b0)) return { l, a, b, alpha };\n\n  // Early exit: if the simple clip is already within JND, use it directly\n  const clip0 = fromLinear(clamp(r0, 0, 1), clamp(g0, 0, 1), clamp(b0, 0, 1));\n  if (deltaEOK(clip0, [l, a, b]) <= JND) {\n    return { l: clip0[0], a: clip0[1], b: clip0[2], alpha };\n  }\n\n  const hRad = Math.atan2(b, a);\n  const C = Math.sqrt(a * a + b * b);\n  let lo = 0;\n  let hi = C;\n  let minInGamut = true;\n  let lastClip: readonly [number, number, number] = clip0;\n\n  while (hi - lo > GAMUT_EPSILON) {\n    const mid = (lo + hi) / 2;\n    const ma = mid * Math.cos(hRad);\n    const mb = mid * Math.sin(hRad);\n    const [lr, lg, lb] = toLinear(l, ma, mb);\n\n    if (minInGamut && strictInGamut(lr, lg, lb)) {\n      lo = mid;\n      continue;\n    }\n\n    const clipOklab = fromLinear(clamp(lr, 0, 1), clamp(lg, 0, 1), clamp(lb, 0, 1));\n    lastClip = clipOklab;\n    const E = deltaEOK(clipOklab, [l, ma, mb]);\n\n    if (E <= JND) {\n      lo = mid;\n      minInGamut = false;\n    } else {\n      hi = mid;\n    }\n  }\n\n  return { l: lastClip[0], a: lastClip[1], b: lastClip[2], alpha };\n};\n\n/**\n * Maps an out-of-sRGB-gamut color using the CSS Color 4 algorithm.\n * Returns null for sRGB-bounded inputs (hex, rgb, hsl, etc.) — pass through unchanged.\n * Returns the mapped OklabColor otherwise.\n */\nexport const toGamutSrgbRaw = (input: AnyColor): OklabColor | null => {\n  const raw = getRawOklab(input);\n  if (raw === null) return null;\n  const { l, a, b, alpha } = raw;\n  return cssGamutMap(l, a, b, alpha, oklabToLinear, linearSrgbToOklab);\n};\n\nexport const inGamutCustom = (input: AnyColor, toLinear: LinearConverter): boolean => {\n  const raw = getRawOklab(input);\n  // sRGB-bounded inputs (hex, rgb, hsl, etc.) are always inside the wider P3/Rec.2020 gamut\n  if (raw === null) return true;\n  const [r, g, b] = toLinear(raw.l, raw.a, raw.b);\n  return isLinearInGamut(r, g, b);\n};\n\n/**\n * Maps an out-of-gamut color into a custom gamut using the CSS Color 4 gamut mapping algorithm.\n * Returns null for sRGB-bounded inputs (hex, rgb, hsl, etc.) — pass through unchanged.\n * Returns the mapped OklabColor otherwise.\n * toLinear: OKLab → unclamped linear target-space channels\n * fromLinear: linear target-space channels → OKLab (for deltaEOK of clipped colors)\n */\nexport const toGamutCustom = (\n  input: AnyColor,\n  toLinear: LinearConverter,\n  fromLinear: FromLinearConverter\n): OklabColor | null => {\n  const raw = getRawOklab(input);\n  if (raw === null) return null;\n  const { l, a, b, alpha } = raw;\n  return cssGamutMap(l, a, b, alpha, toLinear, fromLinear);\n};\n","import { labToXyzValues, labToXyzValuesInto } from './colorModels/lab.js';\nimport { oklabToLinear, oklabToLinearInto } from './colorModels/oklab.js';\nimport { xyzD50ToLinearSrgb, xyzD50ToLinearSrgbInto } from './colorModels/xyz.js';\nimport { srgbFromLinear, srgbToLinear } from './transfer.js';\n\nconst DEG_TO_RAD = Math.PI / 180;\n\n/**\n * Convert OKLCH to unclamped linear sRGB channels without object allocation.\n * This is the shared expensive step (OKLCH → OKLab → linear sRGB via 3× cbrt + matrix).\n * Use this when you need multiple color spaces from the same color — compute once,\n * then pass to linearToP3Channels / linearToRec2020Channels (from their plugins) to avoid duplicate work.\n *\n * In-gamut sRGB colors have all channels in [0, 1]. Channels outside this range\n * indicate an out-of-gamut color — use as a free gamut check.\n */\nexport const oklchToLinear = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return oklabToLinear(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of oklchToLinear — writes [lr, lg, lb] into `out`. */\nexport const oklchToLinearInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  oklabToLinearInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * Convert OKLCH to gamma-encoded sRGB channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may\n * exceed this range — callers are responsible for clamping before byte encoding.\n */\nexport const oklchToRgbChannels = (l: number, c: number, h: number): [number, number, number] => {\n  const [r, g, b] = oklchToLinear(l, c, h);\n  return [srgbFromLinear(r), srgbFromLinear(g), srgbFromLinear(b)];\n};\n\n/** Zero-allocation sibling of oklchToRgbChannels — writes [r, g, b] (gamma-encoded, 0–1) into `out`. */\nexport const oklchToRgbChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  oklchToLinearInto(out, l, c, h);\n  out[0] = srgbFromLinear(out[0]!);\n  out[1] = srgbFromLinear(out[1]!);\n  out[2] = srgbFromLinear(out[2]!);\n};\n\n/**\n * Convert OKLCH to both linear and gamma-encoded sRGB channels in a single pass.\n * Avoids recomputing the expensive OKLCH → OKLab → linear step when you need both.\n *\n * Linear channels are useful for gamut checks (all in [0,1] = in sRGB gamut)\n * and as input to P3/Rec2020 conversion matrices.\n * Gamma channels are ready for display on an sRGB canvas (still need clamping for out-of-gamut).\n *\n * Returns [[lr, lg, lb], [sr, sg, sb]] — both in [0, 1] for in-gamut colors.\n */\nexport const oklchToLinearAndSrgb = (\n  l: number,\n  c: number,\n  h: number\n): [[number, number, number], [number, number, number]] => {\n  const [lr, lg, lb] = oklchToLinear(l, c, h);\n  return [\n    [lr, lg, lb],\n    [srgbFromLinear(lr), srgbFromLinear(lg), srgbFromLinear(lb)],\n  ];\n};\n\n/**\n * Zero-allocation sibling of oklchToLinearAndSrgb — writes linear channels into `linOut`\n * and gamma-encoded sRGB channels into `srgbOut`. The two buffers must be distinct.\n */\nexport const oklchToLinearAndSrgbInto = (\n  linOut: Float64Array | number[],\n  srgbOut: Float64Array | number[],\n  l: number,\n  c: number,\n  h: number\n): void => {\n  oklchToLinearInto(linOut, l, c, h);\n  srgbOut[0] = srgbFromLinear(linOut[0]!);\n  srgbOut[1] = srgbFromLinear(linOut[1]!);\n  srgbOut[2] = srgbFromLinear(linOut[2]!);\n};\n\n/**\n * Gamma-encoded sRGB (0–1) → linear sRGB (0–1). Vector sibling of `srgbToLinear`.\n * For byte-scale RGB, pass `r/255, g/255, b/255`. Output range tracks input:\n * channels outside [0, 1] are preserved with the CSS Color 4 extended transfer curve.\n */\nexport const rgbToLinear = (r: number, g: number, b: number): [number, number, number] => [\n  srgbToLinear(r),\n  srgbToLinear(g),\n  srgbToLinear(b),\n];\n\n/** Zero-allocation sibling of rgbToLinear — writes [lr, lg, lb] into `out`. */\nexport const rgbToLinearInto = (out: Float64Array | number[], r: number, g: number, b: number): void => {\n  out[0] = srgbToLinear(r);\n  out[1] = srgbToLinear(g);\n  out[2] = srgbToLinear(b);\n};\n\n/**\n * CIE Lab (D50) → unclamped linear sRGB (0–1). Goes via XYZ D50 with Bradford adaptation.\n * L in [0, 100]; a/b typically in [-128, 128]. Out-of-sRGB-gamut colors return channels\n * outside [0, 1] — use as a free gamut check or pass to `srgbFromLinear` for display.\n */\nexport const labToLinearSrgb = (l: number, a: number, b: number): [number, number, number] => {\n  const [x, y, z] = labToXyzValues(l, a, b);\n  return xyzD50ToLinearSrgb(x, y, z);\n};\n\n/** Zero-allocation sibling of labToLinearSrgb — writes [lr, lg, lb] into `out`. */\nexport const labToLinearSrgbInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  labToXyzValuesInto(out, l, a, b);\n  xyzD50ToLinearSrgbInto(out, out[0]!, out[1]!, out[2]!);\n};\n\n/**\n * CIE LCH (D50) → unclamped linear sRGB (0–1). Polar-to-rectangular to Lab, then Lab → linear sRGB.\n * L in [0, 100]; C is the chroma (0–~150); H in degrees. Out-of-gamut colors return channels\n * outside [0, 1] — useful in LCH render hot paths where you want linear pixels and a gamut check in one step.\n */\nexport const lchToLinearSrgb = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToLinearSrgb(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToLinearSrgb — writes [lr, lg, lb] into `out`. */\nexport const lchToLinearSrgbInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToLinearSrgbInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * CIE Lab (D50) → gamma-encoded sRGB (0–1). Convenience wrapper over `labToLinearSrgb` + `srgbFromLinear`.\n * In-gamut colors return channels in [0, 1]; out-of-gamut channels may exceed this range — clamp before byte encoding.\n */\nexport const labToRgbChannels = (l: number, a: number, b: number): [number, number, number] => {\n  const [lr, lg, lb] = labToLinearSrgb(l, a, b);\n  return [srgbFromLinear(lr), srgbFromLinear(lg), srgbFromLinear(lb)];\n};\n\n/** Zero-allocation sibling of labToRgbChannels — writes [r, g, b] (gamma-encoded, 0–1) into `out`. */\nexport const labToRgbChannelsInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  labToLinearSrgbInto(out, l, a, b);\n  out[0] = srgbFromLinear(out[0]!);\n  out[1] = srgbFromLinear(out[1]!);\n  out[2] = srgbFromLinear(out[2]!);\n};\n\n/**\n * CIE LCH (D50) → gamma-encoded sRGB (0–1). Polar-to-rectangular to Lab, then Lab → gamma sRGB.\n * In-gamut colors return channels in [0, 1]; out-of-gamut channels may exceed this range.\n */\nexport const lchToRgbChannels = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToRgbChannels(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToRgbChannels — writes [r, g, b] (gamma-encoded, 0–1) into `out`. */\nexport const lchToRgbChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToRgbChannelsInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * CIE Lab (D50) → both linear and gamma-encoded sRGB in a single pass.\n * Avoids recomputing Lab → XYZ D50 → linear sRGB when you need both (e.g. gamut check + pixel).\n * Returns [[lr, lg, lb], [sr, sg, sb]].\n */\nexport const labToLinearAndSrgb = (\n  l: number,\n  a: number,\n  b: number\n): [[number, number, number], [number, number, number]] => {\n  const [lr, lg, lb] = labToLinearSrgb(l, a, b);\n  return [\n    [lr, lg, lb],\n    [srgbFromLinear(lr), srgbFromLinear(lg), srgbFromLinear(lb)],\n  ];\n};\n\n/**\n * Zero-allocation sibling of labToLinearAndSrgb — writes linear channels into `linOut`\n * and gamma-encoded sRGB channels into `srgbOut`. The two buffers must be distinct.\n */\nexport const labToLinearAndSrgbInto = (\n  linOut: Float64Array | number[],\n  srgbOut: Float64Array | number[],\n  l: number,\n  a: number,\n  b: number\n): void => {\n  labToLinearSrgbInto(linOut, l, a, b);\n  srgbOut[0] = srgbFromLinear(linOut[0]!);\n  srgbOut[1] = srgbFromLinear(linOut[1]!);\n  srgbOut[2] = srgbFromLinear(linOut[2]!);\n};\n\n/**\n * CIE LCH (D50) → both linear and gamma-encoded sRGB in a single pass.\n * Polar-to-rectangular to Lab, then Lab → linear + gamma sRGB. Returns [[lr, lg, lb], [sr, sg, sb]].\n */\nexport const lchToLinearAndSrgb = (\n  l: number,\n  c: number,\n  h: number\n): [[number, number, number], [number, number, number]] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToLinearAndSrgb(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToLinearAndSrgb — same buffer rules as labToLinearAndSrgbInto. */\nexport const lchToLinearAndSrgbInto = (\n  linOut: Float64Array | number[],\n  srgbOut: Float64Array | number[],\n  l: number,\n  c: number,\n  h: number\n): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToLinearAndSrgbInto(linOut, srgbOut, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n"]}

dist/chunk-FZP4XDSG.cjs

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{ NUM_OR_NONE, clamp, hasKeys, isAnyNumber, isNumber, isObject, parseNum, round, sanitize } from '../helpers.js';\nimport { srgbFromLinear, srgbToLinear } from '../transfer.js';\nimport type { RgbColor, XyzColor, XyzD65Color } from '../types.js';\nimport { clampRgb } from './rgb.js';\n\n// D50 white point (CSS Color 4: xy = 0.3457/0.3585)\nexport const D50_WX = 96.42956752983539;\nexport const D50_WY = 100;\nexport const D50_WZ = 82.51046025104603;\n\n// ── CSS Color 4 exact rational matrices ─────────────────────────────────────\n// sRGB linear → XYZ D65 (xyz in 0–1; callers scale to 0–100 by multiplying).\nconst S_XR = 0.41239079926595951,\n  S_XG = 0.35758433938387796,\n  S_XB = 0.18048078840183429;\nconst S_YR = 0.21263900587151036,\n  S_YG = 0.71516867876775592,\n  S_YB = 0.072192315360733714;\nconst S_ZR = 0.019330818715591849,\n  S_ZG = 0.11919477979462599,\n  S_ZB = 0.95053215224966059;\n\n// XYZ D65 (0–100 scale) → sRGB linear (0–1). Equals the CSS inverse matrix ÷100.\nconst X_RX = 0.032409699419045213,\n  X_RY = -0.015373831775700935,\n  X_RZ = -0.0049861076029300327;\nconst X_GX = -0.0096924363628087984,\n  X_GY = 0.018759675015077206,\n  X_GZ = 0.00041555057407175612;\nconst X_BX = 0.00055630079696993608,\n  X_BY = -0.0020397695888897657,\n  X_BZ = 0.010569715142428786;\n\n// Bradford D65 → D50 (CSS Color 4)\nconst D65_TO_D50_XX = 1.0479297925449969,\n  D65_TO_D50_XY = 0.022946870601609652,\n  D65_TO_D50_XZ = -0.05019226628920524;\nconst D65_TO_D50_YX = 0.02962780877005599,\n  D65_TO_D50_YY = 0.9904344267538799,\n  D65_TO_D50_YZ = -0.017073799063418826;\nconst D65_TO_D50_ZX = -0.009243040646204504,\n  D65_TO_D50_ZY = 0.015055191490298152,\n  D65_TO_D50_ZZ = 0.7518742814281371;\n\n// Bradford D50 → D65 (CSS Color 4, inverse of above)\nconst D50_TO_D65_XX = 0.955473421488075,\n  D50_TO_D65_XY = -0.02309845494876471,\n  D50_TO_D65_XZ = 0.06325924320057072;\nconst D50_TO_D65_YX = -0.0283697093338637,\n  D50_TO_D65_YY = 1.0099953980813041,\n  D50_TO_D65_YZ = 0.021041441191917323;\nconst D50_TO_D65_ZX = 0.012314014864481998,\n  D50_TO_D65_ZY = -0.020507649298898964,\n  D50_TO_D65_ZZ = 1.330365926242124;\n\n// ── RGB ↔ XYZ D65 ───────────────────────────────────────────────────────────\n\n/** sRGB (0–255) → XYZ D65 (0–100, screen-native, no Bradford adaptation). */\nexport const rgbToXyzD65 = ({ r, g, b, alpha }: RgbColor): XyzD65Color => {\n  const lr = srgbToLinear(r / 255),\n    lg = srgbToLinear(g / 255),\n    lb = srgbToLinear(b / 255);\n  return {\n    x: 100 * (S_XR * lr + S_XG * lg + S_XB * lb),\n    y: 100 * (S_YR * lr + S_YG * lg + S_YB * lb),\n    z: 100 * (S_ZR * lr + S_ZG * lg + S_ZB * lb),\n    alpha: clamp(round(alpha, 3), 0, 1),\n    colorSpace: 'xyz-d65' as const,\n  };\n};\n\n/** XYZ D65 (0–100) → linear sRGB (0–1, unclamped). */\nexport const xyzD65ToLinearSrgb = (x: number, y: number, z: number): [number, number, number] => [\n  X_RX * x + X_RY * y + X_RZ * z,\n  X_GX * x + X_GY * y + X_GZ * z,\n  X_BX * x + X_BY * y + X_BZ * z,\n];\n\n/** Zero-allocation sibling of xyzD65ToLinearSrgb — writes [lr, lg, lb] into `out`. */\nexport const xyzD65ToLinearSrgbInto = (out: Float64Array | number[], x: number, y: number, z: number): void => {\n  out[0] = X_RX * x + X_RY * y + X_RZ * z;\n  out[1] = X_GX * x + X_GY * y + X_GZ * z;\n  out[2] = X_BX * x + X_BY * y + X_BZ * z;\n};\n\nexport const xyzD65ToRgb = ({ x, y, z, alpha }: XyzD65Color): RgbColor => {\n  const [lr, lg, lb] = xyzD65ToLinearSrgb(x, y, z);\n  return clampRgb({\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  });\n};\n\nconst xyzD65ToRgbUnclamped = ({ x, y, z, alpha }: XyzD65Color): RgbColor => {\n  const [lr, lg, lb] = xyzD65ToLinearSrgb(x, y, z);\n  return {\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  };\n};\n\n// ── RGB ↔ XYZ D50 ───────────────────────────────────────────────────────────\n\nexport const rgbToXyz = ({ r, g, b, alpha }: RgbColor): XyzColor => {\n  const lr = srgbToLinear(r / 255),\n    lg = srgbToLinear(g / 255),\n    lb = srgbToLinear(b / 255);\n  const xd65 = 100 * (S_XR * lr + S_XG * lg + S_XB * lb);\n  const yd65 = 100 * (S_YR * lr + S_YG * lg + S_YB * lb);\n  const zd65 = 100 * (S_ZR * lr + S_ZG * lg + S_ZB * lb);\n  return {\n    x: D65_TO_D50_XX * xd65 + D65_TO_D50_XY * yd65 + D65_TO_D50_XZ * zd65,\n    y: D65_TO_D50_YX * xd65 + D65_TO_D50_YY * yd65 + D65_TO_D50_YZ * zd65,\n    z: D65_TO_D50_ZX * xd65 + D65_TO_D50_ZY * yd65 + D65_TO_D50_ZZ * zd65,\n    alpha: clamp(round(alpha, 3), 0, 1),\n  };\n};\n\n/** Zero-allocation sibling of xyzD50ToLinearSrgb — writes [lr, lg, lb] into `out`. */\nexport const xyzD50ToLinearSrgbInto = (out: Float64Array | number[], x: number, y: number, z: number): void => {\n  const xd65 = D50_TO_D65_XX * x + D50_TO_D65_XY * y + D50_TO_D65_XZ * z;\n  const yd65 = D50_TO_D65_YX * x + D50_TO_D65_YY * y + D50_TO_D65_YZ * z;\n  const zd65 = D50_TO_D65_ZX * x + D50_TO_D65_ZY * y + D50_TO_D65_ZZ * z;\n  out[0] = X_RX * xd65 + X_RY * yd65 + X_RZ * zd65;\n  out[1] = X_GX * xd65 + X_GY * yd65 + X_GZ * zd65;\n  out[2] = X_BX * xd65 + X_BY * yd65 + X_BZ * zd65;\n};\n\n/** XYZ D50 → linear sRGB (no gamma, no clamping). x/y/z are in 0–100 scale. */\nexport const xyzD50ToLinearSrgb = (x: number, y: number, z: number): [number, number, number] => {\n  const xd65 = D50_TO_D65_XX * x + D50_TO_D65_XY * y + D50_TO_D65_XZ * z;\n  const yd65 = D50_TO_D65_YX * x + D50_TO_D65_YY * y + D50_TO_D65_YZ * z;\n  const zd65 = D50_TO_D65_ZX * x + D50_TO_D65_ZY * y + D50_TO_D65_ZZ * z;\n  return [\n    X_RX * xd65 + X_RY * yd65 + X_RZ * zd65,\n    X_GX * xd65 + X_GY * yd65 + X_GZ * zd65,\n    X_BX * xd65 + X_BY * yd65 + X_BZ * zd65,\n  ];\n};\n\nexport const xyzToRgb = ({ x, y, z, alpha }: XyzColor): RgbColor => {\n  const [lr, lg, lb] = xyzD50ToLinearSrgb(x, y, z);\n  return clampRgb({\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  });\n};\n\n/** Unclamped XYZ D50 → gamma-encoded sRGB. Channels may exceed [0, 255] for out-of-sRGB-gamut colors. */\nconst xyzToRgbUnclamped = ({ x, y, z, alpha }: XyzColor): RgbColor => {\n  const [lr, lg, lb] = xyzD50ToLinearSrgb(x, y, z);\n  return {\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  };\n};\n\n// ── Parsers ─────────────────────────────────────────────────────────────────\n\nexport const parseXyzObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  // Reject D65-discriminated objects — parseXyzD65Object owns those.\n  if ((input as { colorSpace?: unknown }).colorSpace === 'xyz-d65') return null;\n  if (!hasKeys(input, ['x', 'y', 'z'])) return null;\n  const { x, y, z, alpha = 1 } = input as { x: unknown; y: unknown; z: unknown; alpha?: unknown };\n  if (!isNumber(x) || !isNumber(y) || !isNumber(z) || !isNumber(alpha)) return null;\n  return xyzToRgbUnclamped({\n    x,\n    y,\n    z,\n    alpha: clamp(alpha, 0, 1),\n  });\n};\n\nexport const parseXyzD65Object = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'xyz-d65') return null;\n  if (!hasKeys(input, ['x', 'y', 'z'])) return null;\n  const { x, y, z, alpha = 1 } = input as { x: unknown; y: unknown; z: unknown; alpha?: unknown };\n  if (!isAnyNumber(x) || !isAnyNumber(y) || !isAnyNumber(z) || !isAnyNumber(alpha)) return null;\n  return xyzD65ToRgbUnclamped({\n    x: sanitize(x),\n    y: sanitize(y),\n    z: sanitize(z),\n    alpha: clamp(sanitize(alpha), 0, 1),\n    colorSpace: 'xyz-d65',\n  });\n};\n\n// CSS Color 4: color(xyz-d65 x y z / alpha). Channels accept number|percentage|none.\n// The library uses a 0–100 XYZ scale (to match the existing XyzColor convention); percent is\n// treated as the same scale for symmetry with the emitted string (100% = 100).\nconst XYZ_D65_RE = new RegExp(\n  `^color\\\\(\\\\s*xyz-d65\\\\s+(?<x>${NUM_OR_NONE})(?<xp>%?)\\\\s+(?<y>${NUM_OR_NONE})(?<yp>%?)` +\n    `\\\\s+(?<z>${NUM_OR_NONE})(?<zp>%?)\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nconst XYZ_D50_RE = new RegExp(\n  `^color\\\\(\\\\s*xyz-d50\\\\s+(?<x>${NUM_OR_NONE})(?<xp>%?)\\\\s+(?<y>${NUM_OR_NONE})(?<yp>%?)` +\n    `\\\\s+(?<z>${NUM_OR_NONE})(?<zp>%?)\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseXyzD65String = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = XYZ_D65_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const x = parseNum(g.x!);\n  const y = parseNum(g.y!);\n  const z = parseNum(g.z!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return xyzD65ToRgbUnclamped({\n    x,\n    y,\n    z,\n    alpha: clamp(alpha, 0, 1),\n    colorSpace: 'xyz-d65',\n  });\n};\n\nexport const parseXyzD50String = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = XYZ_D50_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const x = parseNum(g.x!);\n  const y = parseNum(g.y!);\n  const z = parseNum(g.z!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return xyzToRgbUnclamped({\n    x,\n    y,\n    z,\n    alpha: clamp(alpha, 0, 1),\n  });\n};\n","import { NUM_OR_NONE, clamp, hasKeys, isAnyNumber, isObject, parseNum, round, sanitize } from '../helpers.js';\nimport { srgbToLinear } from '../transfer.js';\nimport type { LabColor, RgbColor, XyzColor } from '../types.js';\nimport { D50_WX as WX, D50_WY as WY, D50_WZ as WZ, rgbToXyz, xyzToRgb } from './xyz.js';\n\n// D65 white point derived from CIE chromaticity (x=0.3127, y=0.329)\nconst D65_WX = (0.3127 / 0.329) * 100;\nconst D65_WY = 100;\nconst D65_WZ = ((1 - 0.3127 - 0.329) / 0.329) * 100;\n\nconst EPSILON = 216 / 24389;\nconst KAPPA = 24389 / 27;\n\nconst f = (t: number) => (t > EPSILON ? Math.cbrt(t) : (KAPPA * t + 16) / 116);\n\nexport const xyzToLab = ({ x, y, z, alpha }: XyzColor): LabColor => {\n  const fy = f(y / WY);\n  return {\n    l: 116 * fy - 16,\n    a: 500 * (f(x / WX) - fy) || 0, // || 0 suppresses −0; NaN is impossible since WX/WZ are non-zero constants\n    b: 200 * (fy - f(z / WZ)) || 0,\n    alpha: round(alpha, 3),\n    colorSpace: 'lab' as const,\n  };\n};\n\n/** Primitives-only Lab → XYZ D50. x/y/z in 0–100 scale. Shared with channels.ts hot paths. */\nexport const labToXyzValues = (l: number, a: number, b: number): [number, number, number] => {\n  const fy = (l + 16) / 116;\n  const fx = a / 500 + fy;\n  const fz = fy - b / 200;\n  return [\n    (fx ** 3 > EPSILON ? fx ** 3 : (116 * fx - 16) / KAPPA) * WX,\n    (l > 8 ? fy ** 3 : l / KAPPA) * WY,\n    (fz ** 3 > EPSILON ? fz ** 3 : (116 * fz - 16) / KAPPA) * WZ,\n  ];\n};\n\n/** Zero-allocation sibling of labToXyzValues — writes [x, y, z] into `out`. */\nexport const labToXyzValuesInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  const fy = (l + 16) / 116;\n  const fx = a / 500 + fy;\n  const fz = fy - b / 200;\n  out[0] = (fx ** 3 > EPSILON ? fx ** 3 : (116 * fx - 16) / KAPPA) * WX;\n  out[1] = (l > 8 ? fy ** 3 : l / KAPPA) * WY;\n  out[2] = (fz ** 3 > EPSILON ? fz ** 3 : (116 * fz - 16) / KAPPA) * WZ;\n};\n\nexport const labToXyz = ({ l, a, b, alpha }: LabColor): XyzColor => {\n  const [x, y, z] = labToXyzValues(l, a, b);\n  return { x, y, z, alpha };\n};\n\nexport const rgbToLab = (rgb: RgbColor): LabColor => xyzToLab(rgbToXyz(rgb));\n\n/** RGB → CIE Lab using D65 white point (screen-native; used for perceptual difference). */\nexport const rgbToLabD65 = ({ r, g, b, alpha }: RgbColor): LabColor => {\n  const lr = srgbToLinear(r / 255),\n    lg = srgbToLinear(g / 255),\n    lb = srgbToLinear(b / 255);\n  const x = 100 * (0.41239079926595951 * lr + 0.35758433938387796 * lg + 0.18048078840183429 * lb);\n  const y = 100 * (0.21263900587151036 * lr + 0.71516867876775592 * lg + 0.072192315360733714 * lb);\n  const z = 100 * (0.019330818715591849 * lr + 0.11919477979462599 * lg + 0.95053215224966059 * lb);\n  const fy = f(y / D65_WY);\n  return {\n    l: 116 * fy - 16,\n    a: 500 * (f(x / D65_WX) - fy) || 0,\n    b: 200 * (fy - f(z / D65_WZ)) || 0,\n    alpha: round(alpha, 3),\n    colorSpace: 'lab' as const,\n  };\n};\n\nexport const deltaE2000 = (lab1: LabColor, lab2: LabColor): number => {\n  const { l: L1, a: a1, b: b1 } = lab1;\n  const { l: L2, a: a2, b: b2 } = lab2;\n  const rad = Math.PI / 180;\n  const deg = 180 / Math.PI;\n\n  const C1 = Math.sqrt(a1 ** 2 + b1 ** 2);\n  const C2 = Math.sqrt(a2 ** 2 + b2 ** 2);\n  const Cab = ((C1 + C2) / 2) ** 7;\n  const G = 0.5 * (1 - Math.sqrt(Cab / (Cab + 25 ** 7)));\n  const a1p = a1 * (1 + G);\n  const a2p = a2 * (1 + G);\n  const C1p = Math.sqrt(a1p ** 2 + b1 ** 2);\n  const C2p = Math.sqrt(a2p ** 2 + b2 ** 2);\n  const Cp = (C1p + C2p) / 2;\n\n  const h1p = a1p === 0 && b1 === 0 ? 0 : Math.atan2(b1, a1p) * deg;\n  const h2p = a2p === 0 && b2 === 0 ? 0 : Math.atan2(b2, a2p) * deg;\n  const h1 = h1p < 0 ? h1p + 360 : h1p;\n  const h2 = h2p < 0 ? h2p + 360 : h2p;\n\n  let dhp = h2 - h1;\n  const absDh = Math.abs(h2 - h1);\n  if (absDh > 180 && h2 <= h1) dhp += 360;\n  else if (absDh > 180 && h2 > h1) dhp -= 360;\n\n  const Lm = (L1 + L2) / 2;\n  let Hm = h1 + h2;\n  if (absDh <= 180) Hm /= 2;\n  else Hm = (h1 + h2 < 360 ? Hm + 360 : Hm - 360) / 2;\n\n  const T =\n    1 -\n    0.17 * Math.cos(rad * (Hm - 30)) +\n    0.24 * Math.cos(2 * rad * Hm) +\n    0.32 * Math.cos(rad * (3 * Hm + 6)) -\n    0.2 * Math.cos(rad * (4 * Hm - 63));\n\n  const dLp = L2 - L1;\n  const dCp = C2p - C1p;\n  const dHp = 2 * Math.sin((rad * dhp) / 2) * Math.sqrt(C1p * C2p);\n\n  const SL = 1 + (0.015 * (Lm - 50) ** 2) / Math.sqrt(20 + (Lm - 50) ** 2);\n  const SC = 1 + 0.045 * Cp;\n  const SH = 1 + 0.015 * Cp * T;\n\n  const RC7 = Cp ** 7;\n  const RC = 2 * Math.sqrt(RC7 / (RC7 + 25 ** 7));\n  const dTheta = 30 * Math.exp(-(((Hm - 275) / 25) ** 2));\n  const RT = -RC * Math.sin(2 * rad * dTheta);\n\n  return Math.sqrt((dLp / SL) ** 2 + (dCp / SC) ** 2 + (dHp / SH) ** 2 + RT * (dCp / SC) * (dHp / SH));\n};\n\nexport const labToRgb = (lab: LabColor): RgbColor => xyzToRgb(labToXyz(lab));\n\n// CSS Color 4: lab(L a b / alpha). L: number|percentage|none (100% = 100).\n// a/b: number|percentage|none (100% = 125).\nconst LAB_RE = new RegExp(\n  `^lab\\\\(\\\\s*(?<l>${NUM_OR_NONE})(?<lp>%?)\\\\s+(?<a>${NUM_OR_NONE})(?<ap>%?)\\\\s+(?<b>${NUM_OR_NONE})(?<bp>%?)` +\n    `\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseLabString = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = LAB_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const l = parseNum(g.l!); // 100% = 100, so value is unchanged whether `%` present\n  const a = g.ap ? parseNum(g.a!) * 1.25 : parseNum(g.a!);\n  const b = g.bp ? parseNum(g.b!) * 1.25 : parseNum(g.b!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return labToRgb({\n    l: clamp(l, 0, 100),\n    a,\n    b,\n    alpha: clamp(alpha, 0, 1),\n    colorSpace: 'lab',\n  });\n};\n\nexport const parseLabObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'lab') return null;\n  if (!hasKeys(input, ['l', 'a', 'b'])) return null;\n  const { l, a, b, alpha = 1 } = input as { l: unknown; a: unknown; b: unknown; alpha?: unknown };\n  if (!isAnyNumber(l) || !isAnyNumber(a) || !isAnyNumber(b) || !isAnyNumber(alpha)) return null;\n  return labToRgb({\n    l: clamp(sanitize(l), 0, 100),\n    a: sanitize(a),\n    b: sanitize(b),\n    alpha: clamp(sanitize(alpha), 0, 1),\n    colorSpace: 'lab',\n  });\n};\n"]}

dist/chunk-MOYQ3PQJ.mjs

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dist/chunk-MOYQ3PQJ.mjs.map

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{ NUM_OR_NONE, clamp, hasKeys, isAnyNumber, isNumber, isObject, parseNum, round, sanitize } from '../helpers.js';\nimport { srgbFromLinear, srgbToLinear } from '../transfer.js';\nimport type { RgbColor, XyzColor, XyzD65Color } from '../types.js';\nimport { clampRgb } from './rgb.js';\n\n// D50 white point (CSS Color 4: xy = 0.3457/0.3585)\nexport const D50_WX = 96.42956752983539;\nexport const D50_WY = 100;\nexport const D50_WZ = 82.51046025104603;\n\n// ── CSS Color 4 exact rational matrices ─────────────────────────────────────\n// sRGB linear → XYZ D65 (xyz in 0–1; callers scale to 0–100 by multiplying).\nconst S_XR = 0.41239079926595951,\n  S_XG = 0.35758433938387796,\n  S_XB = 0.18048078840183429;\nconst S_YR = 0.21263900587151036,\n  S_YG = 0.71516867876775592,\n  S_YB = 0.072192315360733714;\nconst S_ZR = 0.019330818715591849,\n  S_ZG = 0.11919477979462599,\n  S_ZB = 0.95053215224966059;\n\n// XYZ D65 (0–100 scale) → sRGB linear (0–1). Equals the CSS inverse matrix ÷100.\nconst X_RX = 0.032409699419045213,\n  X_RY = -0.015373831775700935,\n  X_RZ = -0.0049861076029300327;\nconst X_GX = -0.0096924363628087984,\n  X_GY = 0.018759675015077206,\n  X_GZ = 0.00041555057407175612;\nconst X_BX = 0.00055630079696993608,\n  X_BY = -0.0020397695888897657,\n  X_BZ = 0.010569715142428786;\n\n// Bradford D65 → D50 (CSS Color 4)\nconst D65_TO_D50_XX = 1.0479297925449969,\n  D65_TO_D50_XY = 0.022946870601609652,\n  D65_TO_D50_XZ = -0.05019226628920524;\nconst D65_TO_D50_YX = 0.02962780877005599,\n  D65_TO_D50_YY = 0.9904344267538799,\n  D65_TO_D50_YZ = -0.017073799063418826;\nconst D65_TO_D50_ZX = -0.009243040646204504,\n  D65_TO_D50_ZY = 0.015055191490298152,\n  D65_TO_D50_ZZ = 0.7518742814281371;\n\n// Bradford D50 → D65 (CSS Color 4, inverse of above)\nconst D50_TO_D65_XX = 0.955473421488075,\n  D50_TO_D65_XY = -0.02309845494876471,\n  D50_TO_D65_XZ = 0.06325924320057072;\nconst D50_TO_D65_YX = -0.0283697093338637,\n  D50_TO_D65_YY = 1.0099953980813041,\n  D50_TO_D65_YZ = 0.021041441191917323;\nconst D50_TO_D65_ZX = 0.012314014864481998,\n  D50_TO_D65_ZY = -0.020507649298898964,\n  D50_TO_D65_ZZ = 1.330365926242124;\n\n// ── RGB ↔ XYZ D65 ───────────────────────────────────────────────────────────\n\n/** sRGB (0–255) → XYZ D65 (0–100, screen-native, no Bradford adaptation). */\nexport const rgbToXyzD65 = ({ r, g, b, alpha }: RgbColor): XyzD65Color => {\n  const lr = srgbToLinear(r / 255),\n    lg = srgbToLinear(g / 255),\n    lb = srgbToLinear(b / 255);\n  return {\n    x: 100 * (S_XR * lr + S_XG * lg + S_XB * lb),\n    y: 100 * (S_YR * lr + S_YG * lg + S_YB * lb),\n    z: 100 * (S_ZR * lr + S_ZG * lg + S_ZB * lb),\n    alpha: clamp(round(alpha, 3), 0, 1),\n    colorSpace: 'xyz-d65' as const,\n  };\n};\n\n/** XYZ D65 (0–100) → linear sRGB (0–1, unclamped). */\nexport const xyzD65ToLinearSrgb = (x: number, y: number, z: number): [number, number, number] => [\n  X_RX * x + X_RY * y + X_RZ * z,\n  X_GX * x + X_GY * y + X_GZ * z,\n  X_BX * x + X_BY * y + X_BZ * z,\n];\n\n/** Zero-allocation sibling of xyzD65ToLinearSrgb — writes [lr, lg, lb] into `out`. */\nexport const xyzD65ToLinearSrgbInto = (out: Float64Array | number[], x: number, y: number, z: number): void => {\n  out[0] = X_RX * x + X_RY * y + X_RZ * z;\n  out[1] = X_GX * x + X_GY * y + X_GZ * z;\n  out[2] = X_BX * x + X_BY * y + X_BZ * z;\n};\n\nexport const xyzD65ToRgb = ({ x, y, z, alpha }: XyzD65Color): RgbColor => {\n  const [lr, lg, lb] = xyzD65ToLinearSrgb(x, y, z);\n  return clampRgb({\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  });\n};\n\nconst xyzD65ToRgbUnclamped = ({ x, y, z, alpha }: XyzD65Color): RgbColor => {\n  const [lr, lg, lb] = xyzD65ToLinearSrgb(x, y, z);\n  return {\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  };\n};\n\n// ── RGB ↔ XYZ D50 ───────────────────────────────────────────────────────────\n\nexport const rgbToXyz = ({ r, g, b, alpha }: RgbColor): XyzColor => {\n  const lr = srgbToLinear(r / 255),\n    lg = srgbToLinear(g / 255),\n    lb = srgbToLinear(b / 255);\n  const xd65 = 100 * (S_XR * lr + S_XG * lg + S_XB * lb);\n  const yd65 = 100 * (S_YR * lr + S_YG * lg + S_YB * lb);\n  const zd65 = 100 * (S_ZR * lr + S_ZG * lg + S_ZB * lb);\n  return {\n    x: D65_TO_D50_XX * xd65 + D65_TO_D50_XY * yd65 + D65_TO_D50_XZ * zd65,\n    y: D65_TO_D50_YX * xd65 + D65_TO_D50_YY * yd65 + D65_TO_D50_YZ * zd65,\n    z: D65_TO_D50_ZX * xd65 + D65_TO_D50_ZY * yd65 + D65_TO_D50_ZZ * zd65,\n    alpha: clamp(round(alpha, 3), 0, 1),\n  };\n};\n\n/** Zero-allocation sibling of xyzD50ToLinearSrgb — writes [lr, lg, lb] into `out`. */\nexport const xyzD50ToLinearSrgbInto = (out: Float64Array | number[], x: number, y: number, z: number): void => {\n  const xd65 = D50_TO_D65_XX * x + D50_TO_D65_XY * y + D50_TO_D65_XZ * z;\n  const yd65 = D50_TO_D65_YX * x + D50_TO_D65_YY * y + D50_TO_D65_YZ * z;\n  const zd65 = D50_TO_D65_ZX * x + D50_TO_D65_ZY * y + D50_TO_D65_ZZ * z;\n  out[0] = X_RX * xd65 + X_RY * yd65 + X_RZ * zd65;\n  out[1] = X_GX * xd65 + X_GY * yd65 + X_GZ * zd65;\n  out[2] = X_BX * xd65 + X_BY * yd65 + X_BZ * zd65;\n};\n\n/** XYZ D50 → linear sRGB (no gamma, no clamping). x/y/z are in 0–100 scale. */\nexport const xyzD50ToLinearSrgb = (x: number, y: number, z: number): [number, number, number] => {\n  const xd65 = D50_TO_D65_XX * x + D50_TO_D65_XY * y + D50_TO_D65_XZ * z;\n  const yd65 = D50_TO_D65_YX * x + D50_TO_D65_YY * y + D50_TO_D65_YZ * z;\n  const zd65 = D50_TO_D65_ZX * x + D50_TO_D65_ZY * y + D50_TO_D65_ZZ * z;\n  return [\n    X_RX * xd65 + X_RY * yd65 + X_RZ * zd65,\n    X_GX * xd65 + X_GY * yd65 + X_GZ * zd65,\n    X_BX * xd65 + X_BY * yd65 + X_BZ * zd65,\n  ];\n};\n\nexport const xyzToRgb = ({ x, y, z, alpha }: XyzColor): RgbColor => {\n  const [lr, lg, lb] = xyzD50ToLinearSrgb(x, y, z);\n  return clampRgb({\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  });\n};\n\n/** Unclamped XYZ D50 → gamma-encoded sRGB. Channels may exceed [0, 255] for out-of-sRGB-gamut colors. */\nconst xyzToRgbUnclamped = ({ x, y, z, alpha }: XyzColor): RgbColor => {\n  const [lr, lg, lb] = xyzD50ToLinearSrgb(x, y, z);\n  return {\n    r: srgbFromLinear(lr) * 255,\n    g: srgbFromLinear(lg) * 255,\n    b: srgbFromLinear(lb) * 255,\n    alpha,\n  };\n};\n\n// ── Parsers ─────────────────────────────────────────────────────────────────\n\nexport const parseXyzObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  // Reject D65-discriminated objects — parseXyzD65Object owns those.\n  if ((input as { colorSpace?: unknown }).colorSpace === 'xyz-d65') return null;\n  if (!hasKeys(input, ['x', 'y', 'z'])) return null;\n  const { x, y, z, alpha = 1 } = input as { x: unknown; y: unknown; z: unknown; alpha?: unknown };\n  if (!isNumber(x) || !isNumber(y) || !isNumber(z) || !isNumber(alpha)) return null;\n  return xyzToRgbUnclamped({\n    x,\n    y,\n    z,\n    alpha: clamp(alpha, 0, 1),\n  });\n};\n\nexport const parseXyzD65Object = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'xyz-d65') return null;\n  if (!hasKeys(input, ['x', 'y', 'z'])) return null;\n  const { x, y, z, alpha = 1 } = input as { x: unknown; y: unknown; z: unknown; alpha?: unknown };\n  if (!isAnyNumber(x) || !isAnyNumber(y) || !isAnyNumber(z) || !isAnyNumber(alpha)) return null;\n  return xyzD65ToRgbUnclamped({\n    x: sanitize(x),\n    y: sanitize(y),\n    z: sanitize(z),\n    alpha: clamp(sanitize(alpha), 0, 1),\n    colorSpace: 'xyz-d65',\n  });\n};\n\n// CSS Color 4: color(xyz-d65 x y z / alpha). Channels accept number|percentage|none.\n// The library uses a 0–100 XYZ scale (to match the existing XyzColor convention); percent is\n// treated as the same scale for symmetry with the emitted string (100% = 100).\nconst XYZ_D65_RE = new RegExp(\n  `^color\\\\(\\\\s*xyz-d65\\\\s+(?<x>${NUM_OR_NONE})(?<xp>%?)\\\\s+(?<y>${NUM_OR_NONE})(?<yp>%?)` +\n    `\\\\s+(?<z>${NUM_OR_NONE})(?<zp>%?)\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nconst XYZ_D50_RE = new RegExp(\n  `^color\\\\(\\\\s*xyz-d50\\\\s+(?<x>${NUM_OR_NONE})(?<xp>%?)\\\\s+(?<y>${NUM_OR_NONE})(?<yp>%?)` +\n    `\\\\s+(?<z>${NUM_OR_NONE})(?<zp>%?)\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseXyzD65String = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = XYZ_D65_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const x = parseNum(g.x!);\n  const y = parseNum(g.y!);\n  const z = parseNum(g.z!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return xyzD65ToRgbUnclamped({\n    x,\n    y,\n    z,\n    alpha: clamp(alpha, 0, 1),\n    colorSpace: 'xyz-d65',\n  });\n};\n\nexport const parseXyzD50String = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = XYZ_D50_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const x = parseNum(g.x!);\n  const y = parseNum(g.y!);\n  const z = parseNum(g.z!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return xyzToRgbUnclamped({\n    x,\n    y,\n    z,\n    alpha: clamp(alpha, 0, 1),\n  });\n};\n","import { NUM_OR_NONE, clamp, hasKeys, isAnyNumber, isObject, parseNum, round, sanitize } from '../helpers.js';\nimport { srgbToLinear } from '../transfer.js';\nimport type { LabColor, RgbColor, XyzColor } from '../types.js';\nimport { D50_WX as WX, D50_WY as WY, D50_WZ as WZ, rgbToXyz, xyzToRgb } from './xyz.js';\n\n// D65 white point derived from CIE chromaticity (x=0.3127, y=0.329)\nconst D65_WX = (0.3127 / 0.329) * 100;\nconst D65_WY = 100;\nconst D65_WZ = ((1 - 0.3127 - 0.329) / 0.329) * 100;\n\nconst EPSILON = 216 / 24389;\nconst KAPPA = 24389 / 27;\n\nconst f = (t: number) => (t > EPSILON ? Math.cbrt(t) : (KAPPA * t + 16) / 116);\n\nexport const xyzToLab = ({ x, y, z, alpha }: XyzColor): LabColor => {\n  const fy = f(y / WY);\n  return {\n    l: 116 * fy - 16,\n    a: 500 * (f(x / WX) - fy) || 0, // || 0 suppresses −0; NaN is impossible since WX/WZ are non-zero constants\n    b: 200 * (fy - f(z / WZ)) || 0,\n    alpha: round(alpha, 3),\n    colorSpace: 'lab' as const,\n  };\n};\n\n/** Primitives-only Lab → XYZ D50. x/y/z in 0–100 scale. Shared with channels.ts hot paths. */\nexport const labToXyzValues = (l: number, a: number, b: number): [number, number, number] => {\n  const fy = (l + 16) / 116;\n  const fx = a / 500 + fy;\n  const fz = fy - b / 200;\n  return [\n    (fx ** 3 > EPSILON ? fx ** 3 : (116 * fx - 16) / KAPPA) * WX,\n    (l > 8 ? fy ** 3 : l / KAPPA) * WY,\n    (fz ** 3 > EPSILON ? fz ** 3 : (116 * fz - 16) / KAPPA) * WZ,\n  ];\n};\n\n/** Zero-allocation sibling of labToXyzValues — writes [x, y, z] into `out`. */\nexport const labToXyzValuesInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  const fy = (l + 16) / 116;\n  const fx = a / 500 + fy;\n  const fz = fy - b / 200;\n  out[0] = (fx ** 3 > EPSILON ? fx ** 3 : (116 * fx - 16) / KAPPA) * WX;\n  out[1] = (l > 8 ? fy ** 3 : l / KAPPA) * WY;\n  out[2] = (fz ** 3 > EPSILON ? fz ** 3 : (116 * fz - 16) / KAPPA) * WZ;\n};\n\nexport const labToXyz = ({ l, a, b, alpha }: LabColor): XyzColor => {\n  const [x, y, z] = labToXyzValues(l, a, b);\n  return { x, y, z, alpha };\n};\n\nexport const rgbToLab = (rgb: RgbColor): LabColor => xyzToLab(rgbToXyz(rgb));\n\n/** RGB → CIE Lab using D65 white point (screen-native; used for perceptual difference). */\nexport const rgbToLabD65 = ({ r, g, b, alpha }: RgbColor): LabColor => {\n  const lr = srgbToLinear(r / 255),\n    lg = srgbToLinear(g / 255),\n    lb = srgbToLinear(b / 255);\n  const x = 100 * (0.41239079926595951 * lr + 0.35758433938387796 * lg + 0.18048078840183429 * lb);\n  const y = 100 * (0.21263900587151036 * lr + 0.71516867876775592 * lg + 0.072192315360733714 * lb);\n  const z = 100 * (0.019330818715591849 * lr + 0.11919477979462599 * lg + 0.95053215224966059 * lb);\n  const fy = f(y / D65_WY);\n  return {\n    l: 116 * fy - 16,\n    a: 500 * (f(x / D65_WX) - fy) || 0,\n    b: 200 * (fy - f(z / D65_WZ)) || 0,\n    alpha: round(alpha, 3),\n    colorSpace: 'lab' as const,\n  };\n};\n\nexport const deltaE2000 = (lab1: LabColor, lab2: LabColor): number => {\n  const { l: L1, a: a1, b: b1 } = lab1;\n  const { l: L2, a: a2, b: b2 } = lab2;\n  const rad = Math.PI / 180;\n  const deg = 180 / Math.PI;\n\n  const C1 = Math.sqrt(a1 ** 2 + b1 ** 2);\n  const C2 = Math.sqrt(a2 ** 2 + b2 ** 2);\n  const Cab = ((C1 + C2) / 2) ** 7;\n  const G = 0.5 * (1 - Math.sqrt(Cab / (Cab + 25 ** 7)));\n  const a1p = a1 * (1 + G);\n  const a2p = a2 * (1 + G);\n  const C1p = Math.sqrt(a1p ** 2 + b1 ** 2);\n  const C2p = Math.sqrt(a2p ** 2 + b2 ** 2);\n  const Cp = (C1p + C2p) / 2;\n\n  const h1p = a1p === 0 && b1 === 0 ? 0 : Math.atan2(b1, a1p) * deg;\n  const h2p = a2p === 0 && b2 === 0 ? 0 : Math.atan2(b2, a2p) * deg;\n  const h1 = h1p < 0 ? h1p + 360 : h1p;\n  const h2 = h2p < 0 ? h2p + 360 : h2p;\n\n  let dhp = h2 - h1;\n  const absDh = Math.abs(h2 - h1);\n  if (absDh > 180 && h2 <= h1) dhp += 360;\n  else if (absDh > 180 && h2 > h1) dhp -= 360;\n\n  const Lm = (L1 + L2) / 2;\n  let Hm = h1 + h2;\n  if (absDh <= 180) Hm /= 2;\n  else Hm = (h1 + h2 < 360 ? Hm + 360 : Hm - 360) / 2;\n\n  const T =\n    1 -\n    0.17 * Math.cos(rad * (Hm - 30)) +\n    0.24 * Math.cos(2 * rad * Hm) +\n    0.32 * Math.cos(rad * (3 * Hm + 6)) -\n    0.2 * Math.cos(rad * (4 * Hm - 63));\n\n  const dLp = L2 - L1;\n  const dCp = C2p - C1p;\n  const dHp = 2 * Math.sin((rad * dhp) / 2) * Math.sqrt(C1p * C2p);\n\n  const SL = 1 + (0.015 * (Lm - 50) ** 2) / Math.sqrt(20 + (Lm - 50) ** 2);\n  const SC = 1 + 0.045 * Cp;\n  const SH = 1 + 0.015 * Cp * T;\n\n  const RC7 = Cp ** 7;\n  const RC = 2 * Math.sqrt(RC7 / (RC7 + 25 ** 7));\n  const dTheta = 30 * Math.exp(-(((Hm - 275) / 25) ** 2));\n  const RT = -RC * Math.sin(2 * rad * dTheta);\n\n  return Math.sqrt((dLp / SL) ** 2 + (dCp / SC) ** 2 + (dHp / SH) ** 2 + RT * (dCp / SC) * (dHp / SH));\n};\n\nexport const labToRgb = (lab: LabColor): RgbColor => xyzToRgb(labToXyz(lab));\n\n// CSS Color 4: lab(L a b / alpha). L: number|percentage|none (100% = 100).\n// a/b: number|percentage|none (100% = 125).\nconst LAB_RE = new RegExp(\n  `^lab\\\\(\\\\s*(?<l>${NUM_OR_NONE})(?<lp>%?)\\\\s+(?<a>${NUM_OR_NONE})(?<ap>%?)\\\\s+(?<b>${NUM_OR_NONE})(?<bp>%?)` +\n    `\\\\s*(?:/\\\\s*(?<al>${NUM_OR_NONE})(?<alp>%?)\\\\s*)?\\\\)$`,\n  'i'\n);\n\nexport const parseLabString = (input: unknown): RgbColor | null => {\n  if (typeof input !== 'string') return null;\n  const g = LAB_RE.exec(input.trim())?.groups;\n  if (!g) return null;\n  const l = parseNum(g.l!); // 100% = 100, so value is unchanged whether `%` present\n  const a = g.ap ? parseNum(g.a!) * 1.25 : parseNum(g.a!);\n  const b = g.bp ? parseNum(g.b!) * 1.25 : parseNum(g.b!);\n  const alpha = g.al === undefined ? 1 : parseNum(g.al) / (g.alp ? 100 : 1);\n  return labToRgb({\n    l: clamp(l, 0, 100),\n    a,\n    b,\n    alpha: clamp(alpha, 0, 1),\n    colorSpace: 'lab',\n  });\n};\n\nexport const parseLabObject = (input: unknown): RgbColor | null => {\n  if (!isObject(input)) return null;\n  if ((input as { colorSpace?: unknown }).colorSpace !== 'lab') return null;\n  if (!hasKeys(input, ['l', 'a', 'b'])) return null;\n  const { l, a, b, alpha = 1 } = input as { l: unknown; a: unknown; b: unknown; alpha?: unknown };\n  if (!isAnyNumber(l) || !isAnyNumber(a) || !isAnyNumber(b) || !isAnyNumber(alpha)) return null;\n  return labToRgb({\n    l: clamp(sanitize(l), 0, 100),\n    a: sanitize(a),\n    b: sanitize(b),\n    alpha: clamp(sanitize(alpha), 0, 1),\n    colorSpace: 'lab',\n  });\n};\n"]}

dist/chunk-UU6FAFFW.cjs

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dist/chunk-UU6FAFFW.cjs.map

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{ labToXyz } from './colorModels/lab.js';\nimport { linearSrgbToOklab, oklabToLinear } from './colorModels/oklab.js';\nimport { xyzD50ToLinearSrgb } from './colorModels/xyz.js';\nimport { ANGLE_UNITS, clamp } from './helpers.js';\nimport type { AnyColor, LabColor, OklabColor, OklchColor } from './types.js';\n\nconst OKLCH_RE =\n  /^oklch\\(\\s*([+-]?\\d*\\.?\\d+)(%?)\\s+([+-]?\\d*\\.?\\d+)(%?)\\s+([+-]?\\d*\\.?\\d+)(deg|rad|grad|turn)?\\s*(?:\\/\\s*([+-]?\\d*\\.?\\d+)(%)?\\s*)?\\)$/i;\n\nconst OKLAB_RE =\n  /^oklab\\(\\s*([+-]?\\d*\\.?\\d+)(%?)\\s+([+-]?\\d*\\.?\\d+)(%?)\\s+([+-]?\\d*\\.?\\d+)(%?)\\s*(?:\\/\\s*([+-]?\\d*\\.?\\d+)(%)?\\s*)?\\)$/i;\n\n/**\n * Extract raw OKLab {l, a, b, alpha} without clamping.\n * Returns null for inputs that are already sRGB-bounded (hex, rgb, hsl, hsv, hwb, etc.).\n */\nconst getRawOklab = (input: AnyColor): { l: number; a: number; b: number; alpha: number } | null => {\n  if (typeof input === 'object' && input !== null) {\n    const obj = input as unknown as Record<string, unknown>;\n    // OklabColor: l/a/b present, no 'lab' colorSpace brand\n    if ('l' in obj && 'a' in obj && 'b' in obj && obj.colorSpace !== 'lab' && !('c' in obj) && !('r' in obj)) {\n      const c = input as OklabColor;\n      if (\n        typeof c.l === 'number' &&\n        typeof c.a === 'number' &&\n        typeof c.b === 'number' &&\n        typeof c.alpha === 'number'\n      ) {\n        return { l: c.l, a: c.a, b: c.b, alpha: c.alpha };\n      }\n    }\n    // OklchColor: l/c/h present, no 'lch' colorSpace brand\n    if ('l' in obj && 'c' in obj && 'h' in obj && obj.colorSpace !== 'lch' && !('a' in obj) && !('r' in obj)) {\n      const c = input as OklchColor;\n      if (typeof c.l === 'number' && typeof c.c === 'number' && typeof c.h === 'number') {\n        const hRad = (c.h * Math.PI) / 180;\n        return { l: c.l, a: c.c * Math.cos(hRad), b: c.c * Math.sin(hRad), alpha: c.alpha };\n      }\n    }\n    // LabColor: convert Lab (D50) → XYZ D50 → D65 → linear sRGB → OKLab (no clamping)\n    if (obj.colorSpace === 'lab') {\n      const c = input as LabColor;\n      if (typeof c.l !== 'number' || typeof c.a !== 'number' || typeof c.b !== 'number') return null;\n      const { x, y, z } = labToXyz(c);\n      const [lr, lg, lb] = xyzD50ToLinearSrgb(x, y, z);\n      const [ol, oa, ob] = linearSrgbToOklab(lr, lg, lb);\n      return { l: ol, a: oa, b: ob, alpha: typeof c.alpha === 'number' ? c.alpha : 1 };\n    }\n    return null;\n  }\n\n  if (typeof input === 'string') {\n    let m = OKLCH_RE.exec(input);\n    if (m) {\n      const l = m[2] ? Number(m[1]) / 100 : Number(m[1]);\n      const c = m[4] ? Number(m[3]) * 0.004 : Number(m[3]);\n      const unit = m[6]?.toLowerCase() ?? 'deg';\n      const hDeg = Number(m[5]) * (ANGLE_UNITS[unit] ?? 1);\n      const hRad = (hDeg * Math.PI) / 180;\n      const alpha = m[7] === undefined ? 1 : Number(m[7]) / (m[8] ? 100 : 1);\n      return { l, a: c * Math.cos(hRad), b: c * Math.sin(hRad), alpha };\n    }\n    m = OKLAB_RE.exec(input);\n    if (m) {\n      const l = m[2] ? Number(m[1]) / 100 : Number(m[1]);\n      const a = m[4] ? Number(m[3]) * 0.004 : Number(m[3]);\n      const b = m[6] ? Number(m[5]) * 0.004 : Number(m[5]);\n      const alpha = m[7] === undefined ? 1 : Number(m[7]) / (m[8] ? 100 : 1);\n      return { l, a, b, alpha };\n    }\n    return null;\n  }\n\n  return null;\n};\n\n// Tolerance for inGamut* checks — NOT used in gamut mapping, which uses strict bounds.\n// Covers two sources of error:\n//   1. Matrix floating-point noise: accumulated cbrt + matrix error is ~3e-10\n//   2. Value rounding: OKLCH stored at 4 dp (L, C) / 2 dp (H) produces linear-sRGB\n//      deviations up to 4.4e-4 on sRGB boundary colors (exhaustive scan of all 256^3 sRGB\n//      values confirms this). EPS = 5e-4 absorbs all rounding artifacts while staying below\n//      ~1.6 gamma-encoded steps (imperceptible), and correctly rejects genuine out-of-gamut\n//      colors (typically 1e-3 and above).\nconst EPS = 5e-4;\n\nconst isLinearInGamut = (r: number, g: number, b: number): boolean =>\n  r >= -EPS && r <= 1 + EPS && g >= -EPS && g <= 1 + EPS && b >= -EPS && b <= 1 + EPS;\n\nconst strictInGamut = (r: number, g: number, b: number): boolean =>\n  r >= 0 && r <= 1 && g >= 0 && g <= 1 && b >= 0 && b <= 1;\n\n/**\n * Returns true if the color is within the sRGB gamut.\n * Always true for hex, rgb, hsl, hsv, and hwb inputs.\n * For oklch/oklab inputs, checks whether the computed linear sRGB channels are in [0, 1].\n */\nexport const inGamutSrgb = (input: AnyColor): boolean => {\n  const raw = getRawOklab(input);\n  if (raw === null) return true;\n  const [r, g, b] = oklabToLinear(raw.l, raw.a, raw.b);\n  return isLinearInGamut(r, g, b);\n};\n\n// CSS Color 4 gamut mapping constants\n// https://www.w3.org/TR/css-color-4/#css-gamut-mapping\nconst JND = 0.02;\nconst GAMUT_EPSILON = 0.0001;\n\n/** Euclidean distance in OKLab — the CSS Color 4 deltaEOK metric. */\nconst deltaEOK = (lab1: readonly [number, number, number], lab2: readonly [number, number, number]): number => {\n  const dl = lab1[0] - lab2[0];\n  const da = lab1[1] - lab2[1];\n  const db = lab1[2] - lab2[2];\n  return Math.sqrt(dl * dl + da * da + db * db);\n};\n\nexport type LinearConverter = (l: number, a: number, b: number) => [number, number, number];\nexport type FromLinearConverter = (r: number, g: number, b: number) => [number, number, number];\n\n/**\n * CSS Color 4 gamut mapping algorithm.\n * Binary-searches for the highest chroma where clip(color) is within JND (0.02 deltaEOK)\n * of the chroma-reduced color, then returns the clipped result.\n * This preserves lightness and hue while accepting only perceptually negligible clip error.\n *\n * toLinear: OKLab → unclamped linear target-space channels\n * fromLinear: linear target-space channels → OKLab (used to measure deltaEOK of clipped color)\n */\nconst cssGamutMap = (\n  l: number,\n  a: number,\n  b: number,\n  alpha: number,\n  toLinear: LinearConverter,\n  fromLinear: FromLinearConverter\n): OklabColor => {\n  if (l >= 1) return { l: 1, a: 0, b: 0, alpha };\n  if (l <= 0) return { l: 0, a: 0, b: 0, alpha };\n\n  const [r0, g0, b0] = toLinear(l, a, b);\n  if (strictInGamut(r0, g0, b0)) return { l, a, b, alpha };\n\n  // Early exit: if the simple clip is already within JND, use it directly\n  const clip0 = fromLinear(clamp(r0, 0, 1), clamp(g0, 0, 1), clamp(b0, 0, 1));\n  if (deltaEOK(clip0, [l, a, b]) <= JND) {\n    return { l: clip0[0], a: clip0[1], b: clip0[2], alpha };\n  }\n\n  const hRad = Math.atan2(b, a);\n  const C = Math.sqrt(a * a + b * b);\n  let lo = 0;\n  let hi = C;\n  let minInGamut = true;\n  let lastClip: readonly [number, number, number] = clip0;\n\n  while (hi - lo > GAMUT_EPSILON) {\n    const mid = (lo + hi) / 2;\n    const ma = mid * Math.cos(hRad);\n    const mb = mid * Math.sin(hRad);\n    const [lr, lg, lb] = toLinear(l, ma, mb);\n\n    if (minInGamut && strictInGamut(lr, lg, lb)) {\n      lo = mid;\n      continue;\n    }\n\n    const clipOklab = fromLinear(clamp(lr, 0, 1), clamp(lg, 0, 1), clamp(lb, 0, 1));\n    lastClip = clipOklab;\n    const E = deltaEOK(clipOklab, [l, ma, mb]);\n\n    if (E <= JND) {\n      lo = mid;\n      minInGamut = false;\n    } else {\n      hi = mid;\n    }\n  }\n\n  return { l: lastClip[0], a: lastClip[1], b: lastClip[2], alpha };\n};\n\n/**\n * Maps an out-of-sRGB-gamut color using the CSS Color 4 algorithm.\n * Returns null for sRGB-bounded inputs (hex, rgb, hsl, etc.) — pass through unchanged.\n * Returns the mapped OklabColor otherwise.\n */\nexport const toGamutSrgbRaw = (input: AnyColor): OklabColor | null => {\n  const raw = getRawOklab(input);\n  if (raw === null) return null;\n  const { l, a, b, alpha } = raw;\n  return cssGamutMap(l, a, b, alpha, oklabToLinear, linearSrgbToOklab);\n};\n\nexport const inGamutCustom = (input: AnyColor, toLinear: LinearConverter): boolean => {\n  const raw = getRawOklab(input);\n  // sRGB-bounded inputs (hex, rgb, hsl, etc.) are always inside the wider P3/Rec.2020 gamut\n  if (raw === null) return true;\n  const [r, g, b] = toLinear(raw.l, raw.a, raw.b);\n  return isLinearInGamut(r, g, b);\n};\n\n/**\n * Maps an out-of-gamut color into a custom gamut using the CSS Color 4 gamut mapping algorithm.\n * Returns null for sRGB-bounded inputs (hex, rgb, hsl, etc.) — pass through unchanged.\n * Returns the mapped OklabColor otherwise.\n * toLinear: OKLab → unclamped linear target-space channels\n * fromLinear: linear target-space channels → OKLab (for deltaEOK of clipped colors)\n */\nexport const toGamutCustom = (\n  input: AnyColor,\n  toLinear: LinearConverter,\n  fromLinear: FromLinearConverter\n): OklabColor | null => {\n  const raw = getRawOklab(input);\n  if (raw === null) return null;\n  const { l, a, b, alpha } = raw;\n  return cssGamutMap(l, a, b, alpha, toLinear, fromLinear);\n};\n","import { labToXyzValues, labToXyzValuesInto } from './colorModels/lab.js';\nimport { oklabToLinear, oklabToLinearInto } from './colorModels/oklab.js';\nimport { xyzD50ToLinearSrgb, xyzD50ToLinearSrgbInto } from './colorModels/xyz.js';\nimport { srgbFromLinear, srgbToLinear } from './transfer.js';\n\nconst DEG_TO_RAD = Math.PI / 180;\n\n/**\n * Convert OKLCH to unclamped linear sRGB channels without object allocation.\n * This is the shared expensive step (OKLCH → OKLab → linear sRGB via 3× cbrt + matrix).\n * Use this when you need multiple color spaces from the same color — compute once,\n * then pass to linearToP3Channels / linearToRec2020Channels (from their plugins) to avoid duplicate work.\n *\n * In-gamut sRGB colors have all channels in [0, 1]. Channels outside this range\n * indicate an out-of-gamut color — use as a free gamut check.\n */\nexport const oklchToLinear = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return oklabToLinear(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of oklchToLinear — writes [lr, lg, lb] into `out`. */\nexport const oklchToLinearInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  oklabToLinearInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * Convert OKLCH to gamma-encoded sRGB channels without object allocation.\n * Returns [r, g, b] in [0, 1] for in-gamut colors. Out-of-gamut channels may\n * exceed this range — callers are responsible for clamping before byte encoding.\n */\nexport const oklchToRgbChannels = (l: number, c: number, h: number): [number, number, number] => {\n  const [r, g, b] = oklchToLinear(l, c, h);\n  return [srgbFromLinear(r), srgbFromLinear(g), srgbFromLinear(b)];\n};\n\n/** Zero-allocation sibling of oklchToRgbChannels — writes [r, g, b] (gamma-encoded, 0–1) into `out`. */\nexport const oklchToRgbChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  oklchToLinearInto(out, l, c, h);\n  out[0] = srgbFromLinear(out[0]!);\n  out[1] = srgbFromLinear(out[1]!);\n  out[2] = srgbFromLinear(out[2]!);\n};\n\n/**\n * Convert OKLCH to both linear and gamma-encoded sRGB channels in a single pass.\n * Avoids recomputing the expensive OKLCH → OKLab → linear step when you need both.\n *\n * Linear channels are useful for gamut checks (all in [0,1] = in sRGB gamut)\n * and as input to P3/Rec2020 conversion matrices.\n * Gamma channels are ready for display on an sRGB canvas (still need clamping for out-of-gamut).\n *\n * Returns [[lr, lg, lb], [sr, sg, sb]] — both in [0, 1] for in-gamut colors.\n */\nexport const oklchToLinearAndSrgb = (\n  l: number,\n  c: number,\n  h: number\n): [[number, number, number], [number, number, number]] => {\n  const [lr, lg, lb] = oklchToLinear(l, c, h);\n  return [\n    [lr, lg, lb],\n    [srgbFromLinear(lr), srgbFromLinear(lg), srgbFromLinear(lb)],\n  ];\n};\n\n/**\n * Zero-allocation sibling of oklchToLinearAndSrgb — writes linear channels into `linOut`\n * and gamma-encoded sRGB channels into `srgbOut`. The two buffers must be distinct.\n */\nexport const oklchToLinearAndSrgbInto = (\n  linOut: Float64Array | number[],\n  srgbOut: Float64Array | number[],\n  l: number,\n  c: number,\n  h: number\n): void => {\n  oklchToLinearInto(linOut, l, c, h);\n  srgbOut[0] = srgbFromLinear(linOut[0]!);\n  srgbOut[1] = srgbFromLinear(linOut[1]!);\n  srgbOut[2] = srgbFromLinear(linOut[2]!);\n};\n\n/**\n * Gamma-encoded sRGB (0–1) → linear sRGB (0–1). Vector sibling of `srgbToLinear`.\n * For byte-scale RGB, pass `r/255, g/255, b/255`. Output range tracks input:\n * channels outside [0, 1] are preserved with the CSS Color 4 extended transfer curve.\n */\nexport const rgbToLinear = (r: number, g: number, b: number): [number, number, number] => [\n  srgbToLinear(r),\n  srgbToLinear(g),\n  srgbToLinear(b),\n];\n\n/** Zero-allocation sibling of rgbToLinear — writes [lr, lg, lb] into `out`. */\nexport const rgbToLinearInto = (out: Float64Array | number[], r: number, g: number, b: number): void => {\n  out[0] = srgbToLinear(r);\n  out[1] = srgbToLinear(g);\n  out[2] = srgbToLinear(b);\n};\n\n/**\n * CIE Lab (D50) → unclamped linear sRGB (0–1). Goes via XYZ D50 with Bradford adaptation.\n * L in [0, 100]; a/b typically in [-128, 128]. Out-of-sRGB-gamut colors return channels\n * outside [0, 1] — use as a free gamut check or pass to `srgbFromLinear` for display.\n */\nexport const labToLinearSrgb = (l: number, a: number, b: number): [number, number, number] => {\n  const [x, y, z] = labToXyzValues(l, a, b);\n  return xyzD50ToLinearSrgb(x, y, z);\n};\n\n/** Zero-allocation sibling of labToLinearSrgb — writes [lr, lg, lb] into `out`. */\nexport const labToLinearSrgbInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  labToXyzValuesInto(out, l, a, b);\n  xyzD50ToLinearSrgbInto(out, out[0]!, out[1]!, out[2]!);\n};\n\n/**\n * CIE LCH (D50) → unclamped linear sRGB (0–1). Polar-to-rectangular to Lab, then Lab → linear sRGB.\n * L in [0, 100]; C is the chroma (0–~150); H in degrees. Out-of-gamut colors return channels\n * outside [0, 1] — useful in LCH render hot paths where you want linear pixels and a gamut check in one step.\n */\nexport const lchToLinearSrgb = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToLinearSrgb(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToLinearSrgb — writes [lr, lg, lb] into `out`. */\nexport const lchToLinearSrgbInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToLinearSrgbInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * CIE Lab (D50) → gamma-encoded sRGB (0–1). Convenience wrapper over `labToLinearSrgb` + `srgbFromLinear`.\n * In-gamut colors return channels in [0, 1]; out-of-gamut channels may exceed this range — clamp before byte encoding.\n */\nexport const labToRgbChannels = (l: number, a: number, b: number): [number, number, number] => {\n  const [lr, lg, lb] = labToLinearSrgb(l, a, b);\n  return [srgbFromLinear(lr), srgbFromLinear(lg), srgbFromLinear(lb)];\n};\n\n/** Zero-allocation sibling of labToRgbChannels — writes [r, g, b] (gamma-encoded, 0–1) into `out`. */\nexport const labToRgbChannelsInto = (out: Float64Array | number[], l: number, a: number, b: number): void => {\n  labToLinearSrgbInto(out, l, a, b);\n  out[0] = srgbFromLinear(out[0]!);\n  out[1] = srgbFromLinear(out[1]!);\n  out[2] = srgbFromLinear(out[2]!);\n};\n\n/**\n * CIE LCH (D50) → gamma-encoded sRGB (0–1). Polar-to-rectangular to Lab, then Lab → gamma sRGB.\n * In-gamut colors return channels in [0, 1]; out-of-gamut channels may exceed this range.\n */\nexport const lchToRgbChannels = (l: number, c: number, h: number): [number, number, number] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToRgbChannels(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToRgbChannels — writes [r, g, b] (gamma-encoded, 0–1) into `out`. */\nexport const lchToRgbChannelsInto = (out: Float64Array | number[], l: number, c: number, h: number): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToRgbChannelsInto(out, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/**\n * CIE Lab (D50) → both linear and gamma-encoded sRGB in a single pass.\n * Avoids recomputing Lab → XYZ D50 → linear sRGB when you need both (e.g. gamut check + pixel).\n * Returns [[lr, lg, lb], [sr, sg, sb]].\n */\nexport const labToLinearAndSrgb = (\n  l: number,\n  a: number,\n  b: number\n): [[number, number, number], [number, number, number]] => {\n  const [lr, lg, lb] = labToLinearSrgb(l, a, b);\n  return [\n    [lr, lg, lb],\n    [srgbFromLinear(lr), srgbFromLinear(lg), srgbFromLinear(lb)],\n  ];\n};\n\n/**\n * Zero-allocation sibling of labToLinearAndSrgb — writes linear channels into `linOut`\n * and gamma-encoded sRGB channels into `srgbOut`. The two buffers must be distinct.\n */\nexport const labToLinearAndSrgbInto = (\n  linOut: Float64Array | number[],\n  srgbOut: Float64Array | number[],\n  l: number,\n  a: number,\n  b: number\n): void => {\n  labToLinearSrgbInto(linOut, l, a, b);\n  srgbOut[0] = srgbFromLinear(linOut[0]!);\n  srgbOut[1] = srgbFromLinear(linOut[1]!);\n  srgbOut[2] = srgbFromLinear(linOut[2]!);\n};\n\n/**\n * CIE LCH (D50) → both linear and gamma-encoded sRGB in a single pass.\n * Polar-to-rectangular to Lab, then Lab → linear + gamma sRGB. Returns [[lr, lg, lb], [sr, sg, sb]].\n */\nexport const lchToLinearAndSrgb = (\n  l: number,\n  c: number,\n  h: number\n): [[number, number, number], [number, number, number]] => {\n  const hRad = h * DEG_TO_RAD;\n  return labToLinearAndSrgb(l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n\n/** Zero-allocation sibling of lchToLinearAndSrgb — same buffer rules as labToLinearAndSrgbInto. */\nexport const lchToLinearAndSrgbInto = (\n  linOut: Float64Array | number[],\n  srgbOut: Float64Array | number[],\n  l: number,\n  c: number,\n  h: number\n): void => {\n  const hRad = h * DEG_TO_RAD;\n  labToLinearAndSrgbInto(linOut, srgbOut, l, c * Math.cos(hRad), c * Math.sin(hRad));\n};\n"]}

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